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38 lines
1.6 KiB
Markdown
38 lines
1.6 KiB
Markdown
Please first read [Postfix documentation on virtual aliases](http://www.postfix.org/VIRTUAL_README.html#virtual_alias).
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### Configuring aliases
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Aliases are managed in `config/postfix-virtual.cf`.
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An alias is a full email address that will be:
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* delivered to an existing account in `config/postfix-accounts.cf`
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* redirected to one or more other email addresses
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Alias and target are space separated.
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Example:
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# Alias to existing account
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alias1@domain.tld user1@domain.tld
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# Forward to external email address
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alias2@domain.tld external@gmail.com
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### Configuring regexp aliases
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Additional regexp aliases can be configured by placing them into `config/postfix-regexp.cf`. The regexp aliases get evaluated after the virtual aliases (postfix-virtual.cf). For example, the following `config/postfix-regexp.cf` causes all email to "test" users to be delivered to qa@example.com:
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```
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/^test[0-9][0-9]*@example.com/ qa@example.com
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```
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### Address tags as an alternative
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Postfix supports address 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 `+`.
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For more info, see [How to use Address Tagging (user+tag@example.com) with Postfix](https://www.stevejenkins.com/blog/2011/03/how-to-use-address-tagging-usertagexample-com-with-postfix/).
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Note that if you do decide to change the configurable separator, you must add the same line to *both* `config/postfix-main.cf` and `config/dovecot.cf`, because Dovecot is acting as the delivery agent. For example, to switch to `-`, add
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```
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recipient_delimiter = -
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```
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