Postfix rcpt to switch

Question

We are looking to send emails that are going out from development box to 1 email address based on the from address

If they have the following from

sales@domain.com info@domain.com support@domain.com

We want to switch the to address to something like devgroup@domain.com

Thanks!

Answer 1

There's a map for that. ;) (apologies to Steve Jobs and Wietse Venema for my lame humour)

Postfix is capable of address rewriting under MANY circumstances. This circumstance would call for the use of the smtpd_sender_restrictions variable in main.cf.

Effectively, you will be putting a restriction in place to check sender addresses against an access table/db (the map!) you configure, wherein you will tell postfix to redirect to X address if the from address matches Y.

The line in main.cf might look like:

smtpd_sender_restrictions = check_sender_access hash:/etc/postfix/devToRewrite

And the contents of /etc/postfix/devToRewrite might look like:

sales@domain.com REDIRECT devgroup@domain.com

Please keep in mind that rewriting in postfix is very delicate, and you may have configs that could potentially conflict with these intended results.

That being said, some reading to get you started:

• Mailing list answer to someone doing something similar (you're not alone!)
• Postfix config docs for smtpd_sender_restrictions variable (read carefully!)
• Postfix SMTP relay/access control README (good to know)
• Man page for access db definition (don't forget postmap -q!!!)
• Postfix address rewriting README (good to know)

As usual, YMMV && HTH.

:)