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SMTP server stopped working - 28.May2009 4:02:45 AM

trw1970

Posts: 2
Joined: 27.May2009
Status: offline

Hi, sorry for 2 posts in two days.

I had my SMTP service working fine - briefly. But as of yesterday it has completely stopped working. Outgoing mail sits in the queue and keeps failing (currently at 22 retries for the two test mails to my yahoo and hotmail account). Ive tried deleting the mails, restarting smtp server etc and the same just happens when i send mail again.

I have a 'smart host' setup, using our ISP's SMTP server as the host (post.demon.co.uk 25) and can telnet to the server fine and it responds to HELO and MAIL FROM commands.

The only recent changes ive made to the server is

i upgraded .net framework to latest version, not sure if this could be to do with it?.

Ive set logging to maximum but im getting very little info, not sure if this is because im using a smarthost.

Apologies for bothering people here, but any ideas would be greatly appreciated.

Thanks.

Post #: 1

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RE: SMTP server stopped working - 15.Aug.2009 7:09:35 PM

pjhutch

Posts: 3450
Joined: 21.Jul.2001
From: W Yorks, England
Status: offline

Do you have any antivirus software on the server. If its McAfee Virusscan, it can block Port 25 to prevent spamming by worms, viruses etc. You need to unblock it in the VirusScan console.

_____________________________

Peter Hutchison MCP
Exchange Administrator
University of Huddersfield

(in reply to trw1970)

Post #: 2