Bob Tanner said: > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 > > I'm testing out this new feature in exim on tclug-list; called sender > verification. It's part of the new ACL stuff in exim. Actually sender_verify isn't new it's been in exim since 3.x ACLs where new in 4.x though and offer a great deal more functionality. > More details here: > > http://www.exim.org/exim-html-4.20/doc/html/spec_37.html > > NOTE, I have the defer_ok option on, so if the callout to verify the > sender fails with in 10s, the acl will pass and the message will be > accepted, so NO message will be dropped. > > After I'm more confortable with this feature, I might remove the > defer_ok stuff. I've never had defer_ok set on, no need to. > > More or less this tries to verify the sender's address. in my opinion is a mandatory requirement for an MTA. > > $ telnet mailman.real-time.com 25 > Trying 208.20.202.13... > Connected to pirate. > Escape character is '^]'. > 220 pirate.real-time.com ESMTP Thu, 22 May 2003 00:20:59 -0500 > helo real-time.com > 250 pirate.real-time.com Hello gladiator.real-time.com [208.20.202.31] > mail from: blahhahh at real-time.com > 250 OK > rcpt to: root at real-time.com > 550-Verification failed for <blahhahh at real-time.com> > 550-Called: 208.20.202.3 > 550-Sent: RCPT TO:<blahhahh at real-time.com> > 550-Response: 550 5.1.1 <blahhahh at real-time.com>... User unknown > 550 Sender verify failed > > Please let me know if there are any problem. Thanks. > > - -- > Bob Tanner <tanner at real-time.com> | Phone : (952)943-8700 > http://www.mn-linux.org, Minnesota, Linux | Fax : (952)943-8500 > Key fingerprint = AB15 0BDF BCDE 4369 5B42 1973 7CF1 A709 2CC1 B288 > -----BEGIN PGP SIGNATURE----- > Version: GnuPG v1.2.1 (GNU/Linux) > > iD8DBQE+zFihfPGnCSzBsogRAqQuAKCFYDrp8BTsREt4GQBrOphZWcqE0ACfTv6E > q7tjmlqRzAt1YhsIps9NhbI=dMpH > -----END PGP SIGNATURE----- > > _______________________________________________ > TCLUG Mailing List - Minneapolis/St. Paul, Minnesota > http://www.mn-linux.org tclug-list at mn-linux.org > https://mailman.real-time.com/mailman/listinfo/tclug-list -- Ben Lutgens System Administrator _______________________________________________ TCLUG Mailing List - Minneapolis/St. Paul, Minnesota http://www.mn-linux.org tclug-list at mn-linux.org https://mailman.real-time.com/mailman/listinfo/tclug-list