From: Shijaz Abdulla on
Greetings!

I am co-existing an Exchange 2003 with Exchange 2007. Yesterday, I
commissioned three edge transport servers and so far its working great,
except for this issue:

We are not able to receive emails from certain domains. I can say we receive
email from 99% of the domains, but from certain domains - no email at all.

I checked the message tracking logs and I could not find a trace of these
emails. So I enabled Protocol Logging on the edge transport servers and
found something interesting:

2008-03-18T07:02:47.218Z,myserver\Default internal receive connector
myserver,08CA51E4179C05C2,0,xx.xx.xx.xx:25,203.91.198.75:28664,+,,
2008-03-18T07:02:47.218Z,myserver\Default internal receive connector
myserver,08CA51E4179C05C2,1,xx.xx.xx.xx:25,203.91.198.75:28664,*,SMTPSubmit
SMTPAcceptAnySender SMTPAcceptAuthoritativeDomainSender
AcceptRoutingHeaders,Set Session Permissions
2008-03-18T07:02:47.218Z,myserver\Default internal receive connector
myserver,08CA51E4179C05C2,2,xx.xx.xx.xx:25,203.91.198.75:28664,>,"220
myserver.mydomain.com Microsoft ESMTP MAIL Service ready at Tue, 18 Mar 2008
11:02:47 +0400",
2008-03-18T07:02:47.218Z,myserver\Default internal receive connector
myserver,08CA51E4179C05C2,0,xx.xx.xx.xx:25,203.91.198.75:28664,+,,
2008-03-18T07:02:47.218Z,myserver\Default internal receive connector
myserver,08CA51E4179C05C2,1,xx.xx.xx.xx:25,203.91.198.75:28664,*,SMTPSubmit
SMTPAcceptAnySender SMTPAcceptAuthoritativeDomainSender
AcceptRoutingHeaders,Set Session Permissions
2008-03-18T07:02:47.218Z,myserver\Default internal receive connector
myserver,08CA51E4179C05C2,2,xx.xx.xx.xx:25,203.91.198.75:28664,>,"220
myserver.mydomain.com Microsoft ESMTP MAIL Service ready at Tue, 18 Mar 2008
11:02:47 +0400",
2008-03-18T07:02:47.296Z,myserver\Default internal receive connector
myserver,08CA51E4179C05C2,3,xx.xx.xx.xx:25,203.91.198.75:28664,<,EHLO
wipro-blr-out02.wipro.com,
2008-03-18T07:02:47.296Z,myserver\Default internal receive connector
myserver,08CA51E4179C05C2,4,xx.xx.xx.xx:25,203.91.198.75:28664,>,250-myserver.mydomain.com Hello [203.91.198.75],
2008-03-18T07:02:47.296Z,myserver\Default internal receive connector
myserver,08CA51E4179C05C2,5,xx.xx.xx.xx:25,203.91.198.75:28664,>,250-SIZE
10485760,
2008-03-18T07:02:47.296Z,myserver\Default internal receive connector
myserver,08CA51E4179C05C2,6,xx.xx.xx.xx:25,203.91.198.75:28664,>,250-PIPELINING,
2008-03-18T07:02:47.296Z,myserver\Default internal receive connector
myserver,08CA51E4179C05C2,7,xx.xx.xx.xx:25,203.91.198.75:28664,>,250-DSN,
2008-03-18T07:02:47.296Z,myserver\Default internal receive connector
myserver,08CA51E4179C05C2,8,xx.xx.xx.xx:25,203.91.198.75:28664,>,250-ENHANCEDSTATUSCODES,
2008-03-18T07:02:47.296Z,myserver\Default internal receive connector
myserver,08CA51E4179C05C2,9,xx.xx.xx.xx:25,203.91.198.75:28664,>,250-STARTTLS,
2008-03-18T07:02:47.296Z,myserver\Default internal receive connector
myserver,08CA51E4179C05C2,10,xx.xx.xx.xx:25,203.91.198.75:28664,>,250-X-ANONYMOUSTLS,
2008-03-18T07:02:47.296Z,myserver\Default internal receive connector
myserver,08CA51E4179C05C2,11,xx.xx.xx.xx:25,203.91.198.75:28664,>,250-AUTH,
2008-03-18T07:02:47.296Z,myserver\Default internal receive connector
myserver,08CA51E4179C05C2,12,xx.xx.xx.xx:25,203.91.198.75:28664,>,250-X-EXPS
NTLM,
2008-03-18T07:02:47.296Z,myserver\Default internal receive connector
myserver,08CA51E4179C05C2,13,xx.xx.xx.xx:25,203.91.198.75:28664,>,250-8BITMIME,
2008-03-18T07:02:47.296Z,myserver\Default internal receive connector
myserver,08CA51E4179C05C2,14,xx.xx.xx.xx:25,203.91.198.75:28664,>,250-BINARYMIME,
2008-03-18T07:02:47.296Z,myserver\Default internal receive connector
myserver,08CA51E4179C05C2,15,xx.xx.xx.xx:25,203.91.198.75:28664,>,250-CHUNKING,
2008-03-18T07:02:47.296Z,myserver\Default internal receive connector
myserver,08CA51E4179C05C2,16,xx.xx.xx.xx:25,203.91.198.75:28664,>,250
XEXCH50,
..
..
..
2008-03-18T07:05:24.781Z,myserver\Default internal receive connector
myserver,08CA51E4179C05C2,17,xx.xx.xx.xx:25,203.91.198.75:28664,>,451 4.7.0
Timeout waiting for client input,
2008-03-18T07:05:24.781Z,myserver\Default internal receive connector
myserver,08CA51E4179C05C2,18,xx.xx.xx.xx:25,203.91.198.75:28664,-,,Local

Its doing this every single time this particular remote server (and a few
others) is trying to send us email. What am I missing here? Has anyone come
across a similar problem before?


--
Shijaz Abdulla
MVP - ISA Server
www.shijaz.com

This post is provided ''as is'' and confers no rights. Views expressed are
my own, and not those of anyone associated with me.