Am Freitag, April 22, 2022 12:25 CEST, schrieb al...@coakmail.com: > I have found a strange issue, even i enabled the password auth for smtp, > user can send any other domain's email from the MUA by providing their > correct username/password. How can I disable this on postfix? for instance > user has password for u...@coak.com, he should not send email from > u...@coak1.com using the credential. > > Thanks > alice ming >
Hi, i guess you're looking for this option https://www.postfix.org/postconf.5.html#reject_sender_login_mismatch Have a nice day Juergen
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