On Tue, Feb 07, 2012 at 07:53:11AM -0600, I wrote: > On Tue, Feb 07, 2012 at 01:38:19PM +0000, Rachid Abdelkhalak > wrote: > > It is possible to tell to postfix to stop accept sending > > mails from SMTP commands executed from a telnet server 25 ? > > > > Even if the mails are sent from or to relayed domain !! > > What is the goal? If the goal is merely to distinguish between > regular mailer software and someone sitting at a terminal using > telnet(1) as a client, this is not possible. It is also silly > to think you will gain anything from making that distinction. > > There was a recent thread on this list about this: January or > December.
In case you were not on the list then, here is the reference: Subject: Disable sending mails via telnet From: Leslie León Sinclair <les...@electrica.cujae.edu.cu> To: postfix-users@postfix.org Date: Tue, 10 Jan 2012 16:45:25 -0500 Message-Id: <1326231925.7884.33.camel@SID> -- http://rob0.nodns4.us/ -- system administration and consulting Offlist GMX mail is seen only if "/dev/rob0" is in the Subject: