Am 19.12.2011 02:03, schrieb Steve Fatula: > *From:* Wietse Venema <wie...@porcupine.org> > *To:* Postfix users <postfix-users@postfix.org> > *Sent:* Sunday, December 18, 2011 6:46 PM > *Subject:* Re: Best Practice for (not)allowing "spoofed" MAIL FROM > addresses > > For most users, "spoofing" is about email with their address in the > From: header, coming from an outside machine. The average email > user has no idea what an envelope sender is. > > That may be, but, not my question. My question is about allowing a person to > SEND email, to clarify, an > authenticated user.
than you have not clarified your intention because this is usually not the topic "spoofed" messages since a mailserver generally should not allow random sender addresses - no RFC needed to clarify this: if your users start to send as someb...@yahoo.com you will be sooner or later blacklisted http://www.postfix.org/postconf.5.html reject_authenticated_sender_login_mismatch Enforces the reject_sender_login_mismatch restriction for authenticated clients only. This feature is available in Postfix version 2.1 and later. http://www.postfix.org/postconf.5.html#reject_sender_login_mismatch http://www.postfix.org/postconf.5.html#smtpd_sender_login_maps
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