On Wed, 27 Jul 2005, Brent Clark wrote: > From: Brent Clark <[EMAIL PROTECTED]> > To: exim <[email protected]> > Date: Wed, 27 Jul 2005 14:59:48 +0200 > Subject: [exim] interesting precheck > > I need to perform a tenet check on port 25 on a mail server, and I came > across this: > > telnet mail.server.com 25 > Trying 1.2.3.4... > Connected to mail.server.com. > Escape character is '^]'. > 220 mail.server.com ESMTP Exim 4.52 Wed, 27 Jul 2005 14:44:51 +0200 > mail.server.com > 250 mail.server.com Hello mymail.mymailserver.com [10.11.12.13] > mail from:<[EMAIL PROTECTED]> > 250 OK > rcpt to [EMAIL PROTECTED] > 500 unrecognized command > rcpt to:<[EMAIL PROTECTED]> > 550-Verification failed for <[EMAIL PROTECTED]> > 550-Called: 192.195.66.32 > 550-Sent: RCPT TO:<[EMAIL PROTECTED]> > 550-Response: 550 No such address > 550 Sender verification callout failed. > > So basically it does mail from: lookup, before accepting the mail. > > Would anyone know how to achieve this. > > I bet its going to be something simple, but if someone would be > so kind as to share how to do this, it would be great fully be > appreciated.
It's using callout verification. Described in Section 39.31 of the exim manual. -- Dennis Davis, BUCS, University of Bath, Bath, BA2 7AY, UK [EMAIL PROTECTED] Phone: +44 1225 386101 -- ## List details at http://www.exim.org/mailman/listinfo/exim-users ## Exim details at http://www.exim.org/ ## Please use the Wiki with this list - http://www.exim.org/eximwiki/
