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loosain
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Exchange 2003: No Mails in and no mails out - but internal mailing works fine

Hi,

since weekend an old SBS2003 stopped delivering Mails. Nothing where done at this machine. Mailing from one Account to another within Exchange works. Those mails coming in the inbox of the recipient.
But if we send a mail to a mailadress outside Exchange it goes to sent-box. But isn´t delivered.
The queues all shows no error and 0 mails.
In event-log there are no errors.
Incoming Mails are successfully delivered to Exchange (we use an third-party-Pop2SMTP). But there the mail shows up at no place.
Like a big black (Mail-)hole...

Anybody out there still experienced with Exchange 2003 ?

Thanks for helping me !

loosain
DNSSBSWindows Server 2003Exchange

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Last Comment
FOX

8/22/2022 - Mon
FOX

Is your DNS still providing an MX record to the outside world?

at a command prompt

nslookup -type=mx [your domain name]
should return a line similar to:
[domain name] MX preference = xx, mail exchanger = [your server]
FOX

Were there any configurations done to the routers in that environment over the weekend?
loosain

ASKER
There were no changes at router config or environment.
MX is on domain at the webserver. Our tool catches the mails via pop3 and sends the mail via smtp to the server. Therefor no MX on the local machine is needed. The pop2smtp-Tool is on the same machine. The mails arrive at the tool and the exchange-gets the mails from the tool. the tool is getting a positiv answer from echange. But then the mails dissapeared...
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rwheeler23
FOX

On the exchange server are you telling me there are no messages backed up in the queues?  Have you attempted to restart the smtp service on the exchange server?
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loosain

ASKER
I found the problem. There was an old spam-software installed and deactivated. I was not told. This software stuck between connector and information store (or something like that). After activating it was all good and all mails came in... thanks.
FOX

Nice!!!
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