diff options
author | Naïm Favier <n@monade.li> | 2022-11-30 22:30:45 +0100 |
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committer | Naïm Favier <n@monade.li> | 2022-12-22 20:45:01 +0100 |
commit | 4fcab839d7fe55cb6544ac57e615dd3c09cfeeb7 (patch) | |
tree | c02c904b0f8bb3214b427eb36504ed944160f3dd /docs | |
parent | bc667fb6afc45f6cc2d118ab77658faf2227cffd (diff) |
docs: use MarkDown for option docs
Diffstat (limited to 'docs')
-rw-r--r-- | docs/add-roundcube.rst | 2 | ||||
-rw-r--r-- | docs/conf.py | 12 | ||||
-rw-r--r-- | docs/howto-develop.rst | 8 | ||||
-rw-r--r-- | docs/options.md | 1202 | ||||
-rw-r--r-- | docs/options.rst | 1319 | ||||
-rw-r--r-- | docs/requirements.txt | 6 |
6 files changed, 1221 insertions, 1328 deletions
diff --git a/docs/add-roundcube.rst b/docs/add-roundcube.rst index 6d4795c..4e6be83 100644 --- a/docs/add-roundcube.rst +++ b/docs/add-roundcube.rst @@ -1,5 +1,5 @@ Add Roundcube, a webmail -======================= +======================== The NixOS module for roundcube nearly works out of the box with SNM. By default, it sets up a nginx virtual host to serve the webmail, other web diff --git a/docs/conf.py b/docs/conf.py index 84eb68b..1845917 100644 --- a/docs/conf.py +++ b/docs/conf.py @@ -18,7 +18,7 @@ # -- Project information ----------------------------------------------------- project = 'NixOS Mailserver' -copyright = '2020, NixOS Mailserver Contributors' +copyright = '2022, NixOS Mailserver Contributors' author = 'NixOS Mailserver Contributors' @@ -28,8 +28,16 @@ author = 'NixOS Mailserver Contributors' # extensions coming with Sphinx (named 'sphinx.ext.*') or your custom # ones. extensions = [ + 'myst_parser' ] +myst_enable_extensions = [ + 'colon_fence', + 'linkify', +] + +smartquotes = False + # Add any paths that contain templates here, relative to this directory. templates_path = ['_templates'] @@ -50,4 +58,4 @@ html_theme = 'sphinx_rtd_theme' # Add any paths that contain custom static files (such as style sheets) here, # relative to this directory. They are copied after the builtin static files, # so a file named "default.css" will overwrite the builtin "default.css". -html_static_path = ['_static'] +html_static_path = [] diff --git a/docs/howto-develop.rst b/docs/howto-develop.rst index ce74683..0ac9009 100644 --- a/docs/howto-develop.rst +++ b/docs/howto-develop.rst @@ -30,8 +30,8 @@ run tests manually. For instance: Contributing to the documentation --------------------------------- -The documentation is written in RST, build with Sphinx and published -by `Read the Docs <https://readthedocs.org/>`_. +The documentation is written in RST (except option documentation which is in MarkDown), +built with Sphinx and published by `Read the Docs <https://readthedocs.org/>`_. For the syntax, see `RST/Sphinx Cheatsheet <https://sphinx-tutorial.readthedocs.io/cheatsheet/>`_. @@ -47,11 +47,11 @@ documentation: $ firefox ./_build/html/index.html Note if you modify some NixOS mailserver options, you would also need -to regenerate the ``options.rst`` file: +to regenerate the ``options.md`` file: :: - $ nix-shell --run generate-rst-options + $ nix-shell --run generate-options Nixops ------ diff --git a/docs/options.md b/docs/options.md new file mode 100644 index 0000000..0944fa7 --- /dev/null +++ b/docs/options.md @@ -0,0 +1,1202 @@ + +# Mailserver options + +## `mailserver` + + + +`````{option} mailserver.debug +Whether to enable verbose logging for mailserver related services. This +intended be used for development purposes only, you probably don't want +to enable this unless you're hacking on nixos-mailserver. + + +- type: ```boolean``` +- default: ```False``` + +````` + + +`````{option} mailserver.domains +The domains that this mail server serves. + +- type: ```list of string``` +- default: ```[]``` +- example: ```['example.com']``` +````` + + +`````{option} mailserver.enable +Whether to enable nixos-mailserver. + +- type: ```boolean``` +- default: ```False``` +- example: ```True``` +````` + + +`````{option} mailserver.enableImap +Whether to enable IMAP with STARTTLS on port 143. + + +- type: ```boolean``` +- default: ```True``` + +````` + + +`````{option} mailserver.enableImapSsl +Whether to enable IMAP with TLS in wrapper-mode on port 993. + + +- type: ```boolean``` +- default: ```True``` + +````` + + +`````{option} mailserver.enableManageSieve +Whether to enable ManageSieve, setting this option to true will open +port 4190 in the firewall. + +The ManageSieve protocol allows users to manage their Sieve scripts on +a remote server with a supported client, including Thunderbird. + + +- type: ```boolean``` +- default: ```False``` + +````` + + +`````{option} mailserver.enablePop3 +Whether to enable POP3 with STARTTLS on port on port 110. + + +- type: ```boolean``` +- default: ```False``` + +````` + + +`````{option} mailserver.enablePop3Ssl +Whether to enable POP3 with TLS in wrapper-mode on port 995. + + +- type: ```boolean``` +- default: ```False``` + +````` + + +`````{option} mailserver.enableSubmission +Whether to enable SMTP with STARTTLS on port 587. + + +- type: ```boolean``` +- default: ```True``` + +````` + + +`````{option} mailserver.enableSubmissionSsl +Whether to enable SMTP with TLS in wrapper-mode on port 465. + + +- type: ```boolean``` +- default: ```True``` + +````` + + +`````{option} mailserver.extraVirtualAliases +Virtual Aliases. A virtual alias `"info@example.com" = "user1@example.com"` means that +all mail to `info@example.com` is forwarded to `user1@example.com`. Note +that it is expected that `postmaster@example.com` and `abuse@example.com` is +forwarded to some valid email address. (Alternatively you can create login +accounts for `postmaster` and (or) `abuse`). Furthermore, it also allows +the user `user1@example.com` to send emails as `info@example.com`. +It's also possible to create an alias for multiple accounts. In this +example all mails for `multi@example.com` will be forwarded to both +`user1@example.com` and `user2@example.com`. + + +- type: ```attribute set of ((Login Account) or non-empty (list of (Login Account)))``` +- default: ```{}``` +- example: ```{'abuse@example.com': 'user1@example.com', 'info@example.com': 'user1@example.com', 'multi@example.com': ['user1@example.com', 'user2@example.com'], 'postmaster@example.com': 'user1@example.com'}``` +````` + + +`````{option} mailserver.forwards +To forward mails to an external address. For instance, +the value {`"user@example.com" = "user@elsewhere.com";}` +means that mails to `user@example.com` are forwarded to +`user@elsewhere.com`. The difference with the +{option}`mailserver.extraVirtualAliases` option is that `user@elsewhere.com` +can't send mail as `user@example.com`. Also, this option +allows to forward mails to external addresses. + + +- type: ```attribute set of ((list of string) or string)``` +- default: ```{}``` +- example: ```{'user@example.com': 'user@elsewhere.com'}``` +````` + + +`````{option} mailserver.fqdn +The fully qualified domain name of the mail server. + +- type: ```string``` + +- example: ```mx.example.com``` +````` + + +`````{option} mailserver.hierarchySeparator +The hierarchy separator for mailboxes used by dovecot for the namespace 'inbox'. +Dovecot defaults to "." but recommends "/". +This affects how mailboxes appear to mail clients and sieve scripts. +For instance when using "." then in a sieve script "example.com" would refer to the mailbox "com" in the parent mailbox "example". +This does not determine the way your mails are stored on disk. +See https://wiki.dovecot.org/Namespaces for details. + + +- type: ```string``` +- default: ```.``` + +````` + + +`````{option} mailserver.indexDir +Folder to store search indices. If null, indices are stored +along with email, which could not necessarily be desirable, +especially when {option}`mailserver.fullTextSearch.enable` is `true` since +indices it creates are voluminous and do not need to be backed +up. + +Be careful when changing this option value since all indices +would be recreated at the new location (and clients would need +to resynchronize). + +Note the some variables can be used in the file path. See +https://doc.dovecot.org/configuration_manual/mail_location/#variables +for details. + + +- type: ```null or string``` +- default: ```None``` +- example: ```/var/lib/dovecot/indices``` +````` + + +`````{option} mailserver.keyFile +Scheme 1) +Location of the key file + + +- type: ```path``` + +- example: ```/root/mail-server.key``` +````` + + +`````{option} mailserver.lmtpSaveToDetailMailbox +If an email address is delimited by a "+", should it be filed into a +mailbox matching the string after the "+"? For example, +user1+test@example.com would be filed into the mailbox "test". + + +- type: ```one of "yes", "no"``` +- default: ```yes``` + +````` + + +`````{option} mailserver.localDnsResolver +Runs a local DNS resolver (kresd) as recommended when running rspamd. This prevents your log file from filling up with rspamd_monitored_dns_mon entries. + + +- type: ```boolean``` +- default: ```True``` + +````` + + +`````{option} mailserver.mailDirectory +Where to store the mail. + + +- type: ```path``` +- default: ```/var/vmail``` + +````` + + +`````{option} mailserver.mailboxes +The mailboxes for dovecot. +Depending on the mail client used it might be necessary to change some mailbox's name. + + +- type: ```unspecified value``` +- default: ```{'Drafts': {'auto': 'subscribe', 'specialUse': 'Drafts'}, 'Junk': {'auto': 'subscribe', 'specialUse': 'Junk'}, 'Sent': {'auto': 'subscribe', 'specialUse': 'Sent'}, 'Trash': {'auto': 'no', 'specialUse': 'Trash'}}``` + +````` + + +`````{option} mailserver.maxConnectionsPerUser +Maximum number of IMAP/POP3 connections allowed for a user from each IP address. +E.g. a value of 50 allows for 50 IMAP and 50 POP3 connections at the same +time for a single user. + + +- type: ```signed integer``` +- default: ```100``` + +````` + + +`````{option} mailserver.messageSizeLimit +Message size limit enforced by Postfix. + +- type: ```signed integer``` +- default: ```20971520``` +- example: ```52428800``` +````` + + +`````{option} mailserver.openFirewall +Automatically open ports in the firewall. + +- type: ```boolean``` +- default: ```True``` + +````` + + +`````{option} mailserver.policydSPFExtraConfig +Extra configuration options for policyd-spf. This can be use to among +other things skip spf checking for some IP addresses. + + +- type: ```strings concatenated with "\n"``` +- default: `""` +- example: +``` +skip_addresses = 127.0.0.0/8,::ffff:127.0.0.0/104,::1 +``` +````` + + +`````{option} mailserver.rebootAfterKernelUpgrade.enable +Whether to enable automatic reboot after kernel upgrades. +This is to be used in conjunction with `system.autoUpgrade.enable = true;` + + +- type: ```boolean``` +- default: ```False``` +- example: ```True``` +````` + + +`````{option} mailserver.rebootAfterKernelUpgrade.method +Whether to issue a full "reboot" or just a "systemctl kexec"-only reboot. +It is recommended to use the default value because the quicker kexec reboot has a number of problems. +Also if your server is running in a virtual machine the regular reboot will already be very quick. + + +- type: ```one of "reboot", "systemctl kexec"``` +- default: ```reboot``` + +````` + + +`````{option} mailserver.recipientDelimiter +Configure the recipient delimiter. + + +- type: ```string``` +- default: ```+``` + +````` + + +`````{option} mailserver.rejectRecipients +Reject emails addressed to these local addresses from unauthorized senders. +Use if a spammer has found email addresses in a catchall domain but you do +not want to disable the catchall. + + +- type: ```list of string``` +- default: ```[]``` +- example: ```['sales@example.com', 'info@example.com']``` +````` + + +`````{option} mailserver.rejectSender +Reject emails from these addresses from unauthorized senders. +Use if a spammer is using the same domain or the same sender over and over. + + +- type: ```list of string``` +- default: ```[]``` +- example: ```['@example.com', 'spammer@example.net']``` +````` + + +`````{option} mailserver.rewriteMessageId +Rewrites the Message-ID's hostname-part of outgoing emails to the FQDN. +Please be aware that this may cause problems with some mail clients +relying on the original Message-ID. + + +- type: ```boolean``` +- default: ```False``` + +````` + + +`````{option} mailserver.sendingFqdn +The fully qualified domain name of the mail server used to +identify with remote servers. + +If this server's IP serves purposes other than a mail server, +it may be desirable for the server to have a name other than +that to which the user will connect. For example, the user +might connect to mx.example.com, but the server's IP has +reverse DNS that resolves to myserver.example.com; in this +scenario, some mail servers may reject or penalize the +message. + +This setting allows the server to identify as +myserver.example.com when forwarding mail, independently of +{option}`mailserver.fqdn` (which, for SSL reasons, should generally be the name +to which the user connects). + +Set this to the name to which the sending IP's reverse DNS +resolves. + + +- type: ```string``` +- default: {option}`mailserver.fqdn` +- example: ```myserver.example.com``` +````` + + +`````{option} mailserver.sieveDirectory +Where to store the sieve scripts. + + +- type: ```path``` +- default: ```/var/sieve``` + +````` + + +`````{option} mailserver.useFsLayout +Sets whether dovecot should organize mail in subdirectories: + +- /var/vmail/example.com/user/.folder.subfolder/ (default layout) +- /var/vmail/example.com/user/folder/subfolder/ (FS layout) + +See https://wiki2.dovecot.org/MailboxFormat/Maildir for details. + + +- type: ```boolean``` +- default: ```False``` + +````` + + +`````{option} mailserver.virusScanning +Whether to activate virus scanning. Note that virus scanning is _very_ +expensive memory wise. + + +- type: ```boolean``` +- default: ```False``` + +````` + + +`````{option} mailserver.vmailGroupName +The user name and group name of the user that owns the directory where all +the mail is stored. + + +- type: ```string``` +- default: ```virtualMail``` + +````` + + +`````{option} mailserver.vmailUID +The unix UID of the virtual mail user. Be mindful that if this is +changed, you will need to manually adjust the permissions of +`mailDirectory`. + + +- type: ```signed integer``` +- default: ```5000``` + +````` + + +`````{option} mailserver.vmailUserName +The user name and group name of the user that owns the directory where all +the mail is stored. + + +- type: ```string``` +- default: ```virtualMail``` + +````` + +## `mailserver.loginAccounts` + + +`````{option} mailserver.loginAccounts +The login account of the domain. Every account is mapped to a unix user, +e.g. `user1@example.com`. To generate the passwords use `mkpasswd` as +follows + +``` +nix-shell -p mkpasswd --run 'mkpasswd -sm bcrypt' +``` + + +- type: ```attribute set of (submodule)``` +- default: ```{}``` +- example: ```{'user1': {'hashedPassword': '$6$evQJs5CFQyPAW09S$Cn99Y8.QjZ2IBnSu4qf1vBxDRWkaIZWOtmu1Ddsm3.H3CFpeVc0JU4llIq8HQXgeatvYhh5O33eWG3TSpjzu6/'}, 'user2': {'hashedPassword': '$6$oE0ZNv2n7Vk9gOf$9xcZWCCLGdMflIfuA0vR1Q1Xblw6RZqPrP94mEit2/81/7AKj2bqUai5yPyWE.QYPyv6wLMHZvjw3Rlg7yTCD/'}}``` +````` + + +`````{option} mailserver.loginAccounts.<name>.aliases +A list of aliases of this login account. +Note: Use list entries like "@example.com" to create a catchAll +that allows sending from all email addresses in these domain. + + +- type: ```list of string``` +- default: ```[]``` +- example: ```['abuse@example.com', 'postmaster@example.com']``` +````` + + +`````{option} mailserver.loginAccounts.<name>.catchAll +For which domains should this account act as a catch all? +Note: Does not allow sending from all addresses of these domains. + + +- type: ```list of value "example.com" (singular enum)``` +- default: ```[]``` +- example: ```['example.com', 'example2.com']``` +````` + + +`````{option} mailserver.loginAccounts.<name>.hashedPassword +The user's hashed password. Use `mkpasswd` as follows + +``` +nix-shell -p mkpasswd --run 'mkpasswd -sm bcrypt' +``` + +Warning: this is stored in plaintext in the Nix store! +Use {option}`mailserver.loginAccounts.<name>.hashedPasswordFile` instead. + + +- type: ```null or string``` +- default: ```None``` +- example: ```$6$evQJs5CFQyPAW09S$Cn99Y8.QjZ2IBnSu4qf1vBxDRWkaIZWOtmu1Ddsm3.H3CFpeVc0JU4llIq8HQXgeatvYhh5O33eWG3TSpjzu6/``` +````` + + +`````{option} mailserver.loginAccounts.<name>.hashedPasswordFile +A file containing the user's hashed password. Use `mkpasswd` as follows + +``` +nix-shell -p mkpasswd --run 'mkpasswd -sm bcrypt' +``` + + +- type: ```null or path``` +- default: ```None``` +- example: ```/run/keys/user1-passwordhash``` +````` + + +`````{option} mailserver.loginAccounts.<name>.name +Username + +- type: ```string``` + +- example: ```user1@example.com``` +````` + + +`````{option} mailserver.loginAccounts.<name>.quota +Per user quota rules. Accepted sizes are `xx k/M/G/T` with the +obvious meaning. Leave blank for the standard quota `100G`. + + +- type: ```null or string``` +- default: ```None``` +- example: ```2G``` +````` + + +`````{option} mailserver.loginAccounts.<name>.sendOnly +Specifies if the account should be a send-only account. +Emails sent to send-only accounts will be rejected from +unauthorized senders with the `sendOnlyRejectMessage` +stating the reason. + + +- type: ```boolean``` +- default: ```False``` + +````` + + +`````{option} mailserver.loginAccounts.<name>.sendOnlyRejectMessage +The message that will be returned to the sender when an email is +sent to a send-only account. Only used if the account is marked +as send-only. + + +- type: ```string``` +- default: ```This account cannot receive emails.``` + +````` + + +`````{option} mailserver.loginAccounts.<name>.sieveScript +Per-user sieve script. + + +- type: ```null or strings concatenated with "\n"``` +- default: ```None``` +- example: +``` +require ["fileinto", "mailbox"]; + +if address :is "from" "gitlab@mg.gitlab.com" { + fileinto :create "GitLab"; + stop; +} + +# This must be the last rule, it will check if list-id is set, and +# file the message into the Lists folder for further investigation +elsif header :matches "list-id" "<?*>" { + fileinto :create "Lists"; + stop; +} +``` +````` + +## `mailserver.certificate` + + +`````{option} mailserver.certificateDirectory +Scheme 2) +This is the folder where the certificate will be created. The name is +hardcoded to "cert-DOMAIN.pem" and "key-DOMAIN.pem" and the +certificate is valid for 10 years. + + +- type: ```path``` +- default: ```/var/certs``` + +````` + + +`````{option} mailserver.certificateDomains +Secondary domains and subdomains for which it is necessary to generate a certificate. + +- type: ```list of string``` +- default: ```[]``` +- example: ```['imap.example.com', 'pop3.example.com']``` +````` + + +`````{option} mailserver.certificateFile +Scheme 1) +Location of the certificate + + +- type: ```path``` + +- example: ```/root/mail-server.crt``` +````` + + +`````{option} mailserver.certificateScheme +Certificate Files. There are three options for these. + +1) You specify locations and manually copy certificates there. +2) You let the server create new (self signed) certificates on the fly. +3) You let the server create a certificate via `Let's Encrypt`. Note that + this implies that a stripped down webserver has to be started. This also + implies that the FQDN must be set as an `A` record to point to the IP of + the server. In particular port 80 on the server will be opened. For details + on how to set up the domain records, see the guide in the readme. + + +- type: ```one of 1, 2, 3``` +- default: ```2``` + +````` + +## `mailserver.dkim` + + +`````{option} mailserver.dkimBodyCanonicalization +DKIM canonicalization algorithm for message bodies. + +See https://datatracker.ietf.org/doc/html/rfc6376/#section-3.4 for details. + + +- type: ```one of "relaxed", "simple"``` +- default: ```relaxed``` + +````` + + +`````{option} mailserver.dkimHeaderCanonicalization +DKIM canonicalization algorithm for message headers. + +See https://datatracker.ietf.org/doc/html/rfc6376/#section-3.4 for details. + + +- type: ```one of "relaxed", "simple"``` +- default: ```relaxed``` + +````` + + +`````{option} mailserver.dkimKeyBits +How many bits in generated DKIM keys. RFC6376 advises minimum 1024-bit keys. + +If you have already deployed a key with a different number of bits than specified +here, then you should use a different selector ({option}`mailserver.dkimSelector`). In order to get +this package to generate a key with the new number of bits, you will either have to +change the selector or delete the old key file. + + +- type: ```signed integer``` +- default: ```1024``` + +````` + + +`````{option} mailserver.dkimKeyDirectory +The DKIM directory. + + +- type: ```path``` +- default: ```/var/dkim``` + +````` + + +`````{option} mailserver.dkimSelector +The DKIM selector. + + +- type: ```string``` +- default: ```mail``` + +````` + + +`````{option} mailserver.dkimSigning +Whether to activate dkim signing. + + +- type: ```boolean``` +- default: ```True``` + +````` + +## `mailserver.dmarcReporting` + + +`````{option} mailserver.dmarcReporting.domain +The domain from which outgoing DMARC reports are served. + + +- type: ```value "example.com" (singular enum)``` + +- example: ```example.com``` +````` + + +`````{option} mailserver.dmarcReporting.email +The email address used for outgoing DMARC reports. Read-only. + + +- type: ```string``` +- default: ```"${localpart}@${domain}"``` + +````` + + +`````{option} mailserver.dmarcReporting.enable +Whether to send out aggregated, daily DMARC reports in response to incoming +mail, when the sender domain defines a DMARC policy including the RUA tag. + +This is helpful for the mail ecosystem, because it allows third parties to +get notified about SPF/DKIM violations originating from their sender domains. + +See https://rspamd.com/doc/modules/dmarc.html#reporting + + +- type: ```boolean``` +- default: ```False``` + +````` + + +`````{option} mailserver.dmarcReporting.fromName +The sender name for DMARC reports. Defaults to the organization name. + + +- type: ```string``` +- default: {option}`mailserver.dmarcReporting.organizationName` + +````` + + +`````{option} mailserver.dmarcReporting.localpart +The local part of the email address used for outgoing DMARC reports. + + +- type: ```string``` +- default: ```dmarc-noreply``` +- example: ```dmarc-report``` +````` + + +`````{option} mailserver.dmarcReporting.organizationName +The name of your organization used in the `org_name` attribute in +DMARC reports. + + +- type: ```string``` + +- example: ```ACME Corp.``` +````` + +## `mailserver.fullTextSearch` + + +`````{option} mailserver.fullTextSearch.autoIndex +Enable automatic indexing of messages as they are received or modified. + +- type: ```boolean``` +- default: ```True``` + +````` + + +`````{option} mailserver.fullTextSearch.autoIndexExclude +Mailboxes to exclude from automatic indexing. + + +- type: ```list of string``` +- default: ```[]``` +- example: ```['\\Trash', 'SomeFolder', 'Other/*']``` +````` + + +`````{option} mailserver.fullTextSearch.enable +Whether to enable Full text search indexing with xapian. This has significant performance and disk space cost.. + +- type: ```boolean``` +- default: ```False``` +- example: ```True``` +````` + + +`````{option} mailserver.fullTextSearch.enforced +Fail searches when no index is available. If set to +`body`, then only body searches (as opposed to +header) are affected. If set to `no`, searches may +fall back to a very slow brute force search. + + +- type: ```one of "yes", "no", "body"``` +- default: ```no``` + +````` + + +`````{option} mailserver.fullTextSearch.indexAttachments +Also index text-only attachements. Binary attachements are never indexed. + +- type: ```boolean``` +- default: ```False``` + +````` + + +`````{option} mailserver.fullTextSearch.maintenance.enable +Regularly optmize indices, as recommended by upstream. + +- type: ```boolean``` +- default: ```True``` + +````` + + +`````{option} mailserver.fullTextSearch.maintenance.onCalendar +When to run the maintenance job. See systemd.time(7) for more information about the format. + +- type: ```string``` +- default: ```daily``` + +````` + + +`````{option} mailserver.fullTextSearch.maintenance.randomizedDelaySec +Run the maintenance job not exactly at the time specified with `onCalendar`, but plus or minus this many seconds. + +- type: ```signed integer``` +- default: ```1000``` + +````` + + +`````{option} mailserver.fullTextSearch.maxSize +Size of the largest n-gram to index. + +- type: ```signed integer``` +- default: ```20``` + +````` + + +`````{option} mailserver.fullTextSearch.memoryLimit +Memory limit for the indexer process, in MiB. If null, leaves the default (which is rather low), and if 0, no limit. + +- type: ```null or signed integer``` +- default: ```None``` +- example: ```2000``` +````` + + +`````{option} mailserver.fullTextSearch.minSize +Size of the smallest n-gram to index. + +- type: ```signed integer``` +- default: ```2``` + +````` + +## `mailserver.redis` + + +`````{option} mailserver.redis.address +Address that rspamd should use to contact redis. + + +- type: ```string``` +- default: computed from `config.services.redis.servers.rspamd.bind` + +````` + + +`````{option} mailserver.redis.password +Password that rspamd should use to contact redis, or null if not required. + + +- type: ```null or string``` +- default: ```config.services.redis.servers.rspamd.requirePass``` + +````` + + +`````{option} mailserver.redis.port +Port that rspamd should use to contact redis. + + +- type: ```16 bit unsigned integer; between 0 and 65535 (both inclusive)``` +- default: ```config.services.redis.servers.rspamd.port``` + +````` + +## `mailserver.monitoring` + + +`````{option} mailserver.monitoring.alertAddress +The email address to send alerts to. + + +- type: ```string``` + + +````` + + +`````{option} mailserver.monitoring.config +The configuration used for monitoring via monit. +Use a mail address that you actively check and set it via 'set alert ...'. + + +- type: ```string``` +- default: see [source](https://gitlab.com/simple-nixos-mailserver/nixos-mailserver/-/blob/master/default.nix) + +````` + + +`````{option} mailserver.monitoring.enable +Whether to enable monitoring via monit. + +- type: ```boolean``` +- default: ```False``` +- example: ```True``` +````` + +## `mailserver.backup` + + +`````{option} mailserver.backup.cmdPostexec +The command to be executed after each backup operation. This is wrapped in a shell script to be called by rsnapshot. + +- type: ```null or string``` +- default: ```None``` + +````` + + +`````{option} mailserver.backup.cmdPreexec +The command to be executed before each backup operation. This is wrapped in a shell script to be called by rsnapshot. + + +- type: ```null or string``` +- default: ```None``` + +````` + + +`````{option} mailserver.backup.cronIntervals +Periodicity at which intervals should be run by cron. +Note that the intervals also have to exist in configuration +as retain options. + + +- type: ```attribute set of string``` +- default: ```{'daily': '30 3 * * *', 'hourly': ' 0 * * * *', 'weekly': ' 0 5 * * 0'}``` + +````` + + +`````{option} mailserver.backup.enable +Whether to enable backup via rsnapshot. + +- type: ```boolean``` +- default: ```False``` +- example: ```True``` +````` + + +`````{option} mailserver.backup.retain.daily +How many daily snapshots are retained. + +- type: ```signed integer``` +- default: ```7``` + +````` + + +`````{option} mailserver.backup.retain.hourly +How many hourly snapshots are retained. + +- type: ```signed integer``` +- default: ```24``` + +````` + + +`````{option} mailserver.backup.retain.weekly +How many weekly snapshots are retained. + +- type: ```signed integer``` +- default: ```54``` + +````` + + +`````{option} mailserver.backup.snapshotRoot +The directory where rsnapshot stores the backup. + + +- type: ```path``` +- default: ```/var/rsnapshot``` + +````` + +## `mailserver.borgbackup` + + +`````{option} mailserver.borgbackup.cmdPostexec +The command to be executed after each backup operation. +This is called after borg create completed successfully and in the same script that runs +`cmdPreexec`, borg init and create. + + +- type: ```null or string``` +- default: ```None``` + +````` + + +`````{option} mailserver.borgbackup.cmdPreexec +The command to be executed before each backup operation. +This is called prior to borg init in the same script that runs borg init and create and `cmdPostexec`. + + +- type: ```null or string``` +- default: ```None``` +- example: +``` +export BORG_RSH="ssh -i /path/to/private/key" +``` +````` + + +`````{option} mailserver.borgbackup.compression.auto +Leaves it to borg to determine whether an individual file should be compressed. + +- type: ```boolean``` +- default: ```False``` + +````` + + +`````{option} mailserver.borgbackup.compression.level +Denotes the level of compression used by borg. +Most methods accept levels from 0 to 9 but zstd which accepts values from 1 to 22. +If null the decision is left up to borg. + + +- type: ```null or signed integer``` +- default: ```None``` + +````` + + +`````{option} mailserver.borgbackup.compression.method +Leaving this unset allows borg to choose. The default for borg 1.1.4 is lz4. + +- type: ` |