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I have seen automated support ticketing systems which will email the user as soon as their ticket is created with a custom email address for that ticket.

For example,

Does postfix support such a system? Are there any examples out there that might explain how this system might work?

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migrated from Feb 14 '10 at 4:08

This question came from our site for computer enthusiasts and power users.

Many email systems (sendmail, postfix, and others) support the idea of "address extensions". For example, let's assume my address is "". If my mailer supports address extensions, I may also be able to send email to "". The mail still goes to the same places, but the extension is available for filtering. The mail environment feeding a ticket system could be configured with '_' as the extension separator, so that anything addressed to would get forwarded to the ticketing system, which would use the address extension ("1234") to match the email to an issue.

Another mechanism is to dedicate an entire subdomain to the ticketing system. In this case, instead of email going to, maybe it would go to The mail system would be configured to pass all email for to the ticket system.

All of these models are used in practice.

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This would be better posted at as Andreas mentioned. In general it is done by routing any address which is not resolved to an existing mailbox to a default mailbox, and then having a script that processes those mails for specific template data.

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Yes, postfix supports it.

You can find a quick example in

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