We have one central postfix mailserver and some more application servers behind whereas those servers relaying the mails trough the central mailserver. now i want to configure the central one to ...
I have server A with an IP address only and a dummy FQDN (on the basis all machines should have a FQDN): pants.net.invalid. All mail is relayed through another server elsewhere, which works fine. ...
I'm trying to set up my postfix server to alter the sender address of outgoing e-mails for one specific recipient domain (example.com) -- otherwise I'd just configure smtp_generic_maps in main.cf and ...
I have a postfix mailserver running. Mails sent from users to Gmail are showing up in Gmail, so it works in general. Same for all other freemail hosts I know. The problem is that some users have no ...
Is there a way to set up an SMTP relay that allows users of a web app to have the web app send emails with their own email address as senders?
the web service sends out emails on behalf of the users to their customers. So john@domainA.com uses webservice and webservice sends emails . The emails should be appearing as coming from ...
Is there any way to perform SRS, or something similar using Postfix? When I get a mail from firstname.lastname@example.org, I forward it (via a catchall) to email@example.com, but GMail is checking SPF, and ...