Avatar of laurencoull
laurencoull asked on

Exchange 2003 emails not sending

Exchange 2003 running on SBS2003 was all going well for last 6 years until last week when users were finding outgoing emails taking around 2 hours to reach recipients. Then this escalated to them getting 'Deleyed delivery' messages and today they are unable to send out any email, with all messages returning after a while with "Delivery to the following recipients has been delayed". The first time a restart of the Exchange services seemed to work, although on attempting to dismount the Store, a c1041733 message was returned "The operation cannot be completed because a backup process of the targeted stores is currently running". Yet no backup was running. A re-start of the services fixed this, which may or may not have been related to the delayed delivery issue. It could just as easily be an unrelated and insignificant issue. But today, several re-starts of the Services and a full server re-boot have failed to resolve the issue, as has a temporary disable of the AVG Security software. The outgoing mail is stacking up in c:\program files\Exchsrvr\Mailroot\VSI 1\queue. I can't see this being a DNS issue as nothing has changed from when it was working ok. Incoming mail through the pop connector is fine. Users can send email ok from all workstations and from the server via pop/smtp mail accounts but not Exchange. In Event Viewer Application Log there are once per hour or so error id 2013 source smtpsvc "SMTP could not connect to any DNS server. Either none are configured or all are down". Looking back, these entries started appearing on 16 August..... but emails were going out 100% ok from then until last week when the delays started.
ExchangeWindows Server 2003SBS

Avatar of undefined
Last Comment
WGTech-J

8/22/2022 - Mon
ASKER CERTIFIED SOLUTION
WGTech-J

Log in or sign up to see answer
Become an EE member today7-DAY FREE TRIAL
Members can start a 7-Day Free trial then enjoy unlimited access to the platform
Sign up - Free for 7 days
or
Learn why we charge membership fees
We get it - no one likes a content blocker. Take one extra minute and find out why we block content.
See how we're fighting big data
Not exactly the question you had in mind?
Sign up for an EE membership and get your own personalized solution. With an EE membership, you can ask unlimited troubleshooting, research, or opinion questions.
ask a question
SOLUTION
Nick Rhode

Log in or sign up to see answer
Become an EE member today7-DAY FREE TRIAL
Members can start a 7-Day Free trial then enjoy unlimited access to the platform
Sign up - Free for 7 days
or
Learn why we charge membership fees
We get it - no one likes a content blocker. Take one extra minute and find out why we block content.
See how we're fighting big data
Not exactly the question you had in mind?
Sign up for an EE membership and get your own personalized solution. With an EE membership, you can ask unlimited troubleshooting, research, or opinion questions.
ask a question
SOLUTION
Log in to continue reading
Log In
Sign up - Free for 7 days
Get an unlimited membership to EE for less than $4 a week.
Unlimited question asking, solutions, articles and more.
Simon Butler (Sembee)

Exchange 2003 doesn't care about the free disk space. It will continue to operate until there is 0k.
I will be pointing the finger at AVG. I have had that cause a lot of problems recently. Disabling it isn't enough. You need to remove it and reboot the server to get it to release its hooks.

Simon.
ASKER
laurencoull

Resolved: It was wrong DNS addresses in the SMTP Virtual Server. But can't figure why it just went wrong today, as these DNS settings have been there for years and not caused any issues. But as soon as I checked with the ISP what the DNS should be and fed in their settings instead, voila!
WGTech-J

Maybe check DNS cache settings....
All of life is about relationships, and EE has made a viirtual community a real community. It lifts everyone's boat
William Peck