Hi, What is the current best practice for forwarded email? I am building a new server with postfix+rspamd and want to do it the right way (and later also migrate existing older setup to this). I have forwarding defined via virtual_alias_maps.
For DKIM, should it be just ARC enabled in rspamd? When is ARC actually needed, if postfix does not alter the forwarded email (so original DKIM should not break)? For SPF, the fix is SRS. For SRS, how to configure it, so that only the forwarded email (e.g. to gmail) is rewritten and not also the original email from SASL user to gmail? postsrsd rewrites all emails and there are some examples to use multiple postfix instances, but I don't fully understand the division of work. The instance which receives mail from outside via MX is the one which should be running postsrsd (only outgoing email from it are the forwards?), and instance where SASL users connect should not (so outgoing mail, and also locally delivered email - or that should go from SASL instance via the MX instance)? I have also found examples with just 1 instance where the rewriting is limited by MySQL table. If I understand, the query returns the original sender for outgoing email (senders which are virtual accounts/aliases) and only if the query does not return anything, postsrsd is asked. Does this approach have any downsides? Or which one is the preferred way? Something like this: sender_canonical_maps = mysql:/etc/postfix/mysql-no-srs.cf,tcp:127.0.0.1:10001 -- bye, Marki _______________________________________________ Postfix-users mailing list -- [email protected] To unsubscribe send an email to [email protected]
