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| User Management | Aliases |
Please read the Postfix documentation on virtual aliases first.
You can use setup.sh instead of creating and editing files manually. Aliases are managed in /tmp/docker-mailserver/postfix-virtual.cf. An alias is a full email address that will either be:
- delivered to an existing account registered in
/tmp/docker-mailserver/postfix-accounts.cf - redirected to one or more other email addresses
Alias and target are space separated. An example on a server with example.com as its domain:
# Alias delivered to an existing account
alias1@example.com user1@example.com
# Alias forwarded to an external email address
alias2@example.com external-account@gmail.com
Configuring RegExp Aliases
Additional regexp aliases can be configured by placing them into docker-data/dms/config/postfix-regexp.cf. The regexp aliases get evaluated after the virtual aliases (container path: /tmp/docker-mailserver/postfix-virtual.cf). For example, the following docker-data/dms/config/postfix-regexp.cf causes all email sent to "test" users to be delivered to qa@example.com instead:
/^test[0-9][0-9]*@example.com/ qa@example.com
Address Tags (Extension Delimiters) an Alternative to Aliases
Postfix supports so-called address tags, in the form of plus (+) tags - i.e. address+tag@example.com will end up at address@example.com. This is configured by default and the (configurable !) separator is set to +. For more info, see the official documentation.
!!! note
If you do decide to change the configurable separator, you must add the same line to *both* `docker-data/dms/config/postfix-main.cf` and `docker-data/dms/config/dovecot.cf`, because Dovecot is acting as the delivery agent. For example, to switch to `-`, add:
recipient_delimiter = -