On Fri, Oct 23, 2015 at 6:02 AM, Wietse Venema <wie...@porcupine.org> wrote: > helices: > [ Charset windows-1252 converted... ] >> I've been through this before. Yes, I know MTA isn't preferred for such. >> This isn't happening elsewhere. >> >> We have 100s of domains. For example, To:i...@domain1.com will get >> delivered to s...@2domain.net. When Suzy replies, it will be >> From:i...@domain1.com >> >> I can do this by rewriting both From: and To: headers, both incoming and >> outgoing. >> >> What is the simplest way to do this with postfix? > > Use a Milter or SMTP-based content filter. Postfix is an MTA, > it is not a content-management system. > > Wietse
Here are two examples of doing what you want: 1) Ticketing system. In my old job, emails sent to supp...@oldjob.com would be forwarded to those who handled the support. They would reply directly to the ticket, which then would go (email) to the ticketing system which then would send it back to customer, showing only the supp...@oldjob.com as return address. All this email address changing dance was taken care by ticketing system. 2) A mailing list just like this one. If you noticed, the default reply address to this list is postfix-users@postfix.org instead of the user who sent the email. So, it behaves like the ticketing system I mentioned, being the only difference that you can find the email address of the last person who sent a reply to a thread and email directly, bypassing the list or not. Once again, that is taken care by the mailing list software, which probably can also do spam filtering and some other neat features postfix would not do.
