Thanks everyone for the great ideas. I'll try the 'envfrom' tomorrow.
Wietse Venema <wie...@porcupine.org> ezt írta (időpont: 2022. máj. 23., H, 15:46): > > juan smitt: > > Hi, > > > > > > We got a request to match the envelope sender with a certain mail > > header (i.e. X-Something) on our relay servers for every outbound > > mails and reject the email if the sender and the value of this header > > don't match. > > > > It's also possible for a sender to have more than one valid X-Something > > value. > > > > Something like this: > > * senderdomain1.example is only valid with 'v1', 'v66', 'v99' > > X-Something header values > > * senderdomain2.example is only valid with 'v5' > > * senderdomain3.example is only valid with 'v11' and 'v546' > > > > etc, etc > > > > Is this possible with postfix? > > It's not built-in, but should be possible with smtpd_milters. For > example, milter-regex allows you to define rules like: > > reject "X-Something header is not valid for senderdomain1.example" > envfrom /@senderdomain1\.example$/ and not (header /^X-Something/ /^v1$/ or > header /^X-Something/ /^v66$/ or header /^X-Something/ /^v99$/) > > This is not something that should be maintained by hand. Instead, > write a script that generates such rules from an easier to maintain > table. > > Wietse
