Re: Relaying and backskatter problem

2010-03-25 Thread martijn.list
Randy wrote: It appears that exchange uses some other criteria to check sender domain or that it does additional checks and simply rejects with that message. I do realize that I could set up something where we accept the mail to these domains, scan it then drop the email if it is tagged as sp

Re: Relaying and backskatter problem

2010-03-25 Thread Randy
Stan Hoeppner wrote: Randy put forth on 3/24/2010 3:55 PM: dig -x 208.43.143.111 ;; ANSWER SECTION: 111.143.43.208.in-addr.arpa. 3600 INPTR 208.43.143.111-static.reverse.softlayer.com. Your problem isn't the Exchange server per se. Your problem is that you're forwarding spam

Re: Relaying and backskatter problem

2010-03-24 Thread Stan Hoeppner
Randy put forth on 3/24/2010 3:55 PM: > dig -x 208.43.143.111 > ;; ANSWER SECTION: > 111.143.43.208.in-addr.arpa. 3600 INPTR > 208.43.143.111-static.reverse.softlayer.com. Your problem isn't the Exchange server per se. Your problem is that you're forwarding spam to it, and its anti-spam

RE: Relaying and backskatter problem

2010-03-24 Thread Terry Gilsenan
duyz 仍然们 ent from my HTC -Original Message噢 From: Wietse Venema 万维网 Sent: Thursday, 25 March 2010 6:29 AM To: Postfix users Subject: Re: Relaying and backskatter problem Sean Reifschneider: > On 03/24/2010 10:36 AM, Randy wrote: > > EX: > > : Sender address rejected: Domai

Re: Relaying and backskatter problem

2010-03-24 Thread Randy
Wietse Venema wrote: Sean Reifschneider: On 03/24/2010 10:36 AM, Randy wrote: EX: : Sender address rejected: Domain not found (in reply to RCPT TO command)) I'd be tempted to set up a milter or policy filter that for each rcpt would connect to the Exchange server (assuming that'

Re: Relaying and backskatter problem

2010-03-24 Thread Wietse Venema
Sean Reifschneider: > On 03/24/2010 10:36 AM, Randy wrote: > > EX: > > : Sender address rejected: Domain not found (in > > reply to RCPT TO command)) > > I'd be tempted to set up a milter or policy filter that for each rcpt > would connect to the Exchange server (assuming that's where it's destine

Re: Relaying and backskatter problem

2010-03-24 Thread Sean Reifschneider
On 03/24/2010 10:36 AM, Randy wrote: > EX: > : Sender address rejected: Domain not found (in > reply to RCPT TO command)) I'd be tempted to set up a milter or policy filter that for each rcpt would connect to the Exchange server (assuming that's where it's destined) and see if that server will acc