Hi, We're using Exchange 2003 with scanmail for anti-spam We've been having issues receiving emails from motorolasolutions.com. I looked at the current sessions of the smtp virtual servers and i always have sessions from XXXoutboundpool.messaging.microsoft.com stuck there. I know it's emails from motorolasolutions because when i sometimes get an email from motorola and look at the properties, it show it goes trough messaging.microsoft.com (probably they use office 365). Is there a way to know why emails are not going through and the connection gets stuck in the smtp virtual server ? Let me know if u need any info. thanks

Enable SMTP protocol logging and look at the transactions.Ed Crowley MVP "There are seldom good technological solutions to behavioral problems."

Here is what i see in the logs 2012-07-17 22:41:27 216.32.180.12 va3outboundpool.messaging.microsoft.com SMTPSVC1 GICQCEXCH01 192.168.1.2 0 EHLO - +va3outboundpool.messaging.microsoft.com 250 0 316 44 0 SMTP - - - - 2012-07-17 22:41:27 216.32.180.12 va3outboundpool.messaging.microsoft.com SMTPSVC1 GICQCEXCH01 192.168.1.2 0 MAIL - +FROM:<emb.support@motorolasolutions.com> 250 0 58 73 0 SMTP - - - - 2012-07-17 22:41:27 216.32.180.12 va3outboundpool.messaging.microsoft.com SMTPSVC1 GICQCEXCH01 192.168.1.2 0 RCPT - +TO:<bpothin@gicnet.ca> 250 0 0 27 15 SMTP - - - - If i look at the mails that do go through, i see a DATA line and a QUIT, but i never see those lines with the emails from messaging.microsoft.com

found this hotfix http://support.microsoft.com/kb/927478 testing it and ill see if it fixes my issue

Fixed it. but i had to disable Sender ID filtering on the SMTP. Wonder if it's that big of a deal.

On Tue, 17 Jul 2012 23:49:16 +0000, BePe wrote: >Fixed it. but i had to disable Sender ID filtering on the SMTP. Wonder if it's that big of a deal. That's a pretty old problem. Get the most recent build of the msgfilter.dll from MS. See if this works: http://support.microsoft.com/kb/927478 --- Rich Matheisen MCSE+I, Exchange MVP --- Rich Matheisen MCSE+I, Exchange MVP