We provide relay services for our clients. The clients mail-servers connect to our postfix servers , authenticate using a client-accountid and send the messages.
I would like to restrict the from domains for every client.(Mainly to prevent inadvertent spam outbreaks) Can I use smtplogin maps to allow only a list of enumerated from-domains in the envelope senders eg /etc/postfix/smtploginmaps accountid1 *[email protected],*[email protected] accountid2 *[email protected] Is this possible
