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cant send/recieve external email

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by jdavis

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I am running NT4.0 SP, Exch 5.5 and Outlook Express and I cant send/recieve external email. When I send an email I get a return message "Unable to deliver the message due to a communications failure
MSEXCH:IMS:(our company name):(company name:servername) 3550 (000B0981) 550
REQUESTED ACTION NOT TAKEN: DNS FAILURE" Internal mail works. I think it's a problem with the IMS connector, when I try to get into it I get a message " Extension 'SMTP' could not be loaded. The specified module couldnot be found. Microsoft Windows NT ID no. 0xc002007e" and I cant recreate that connector. I also have various errors in event viewer like the DNS server has no primary or secondary zones, and my application log is full of events like: Source: MSExchangeMTA, Category: Field Engineering saying "A timer started with the timeout value set to 10. I have other events too if that helps, thanks

3 replies

by stillatit

There is a cause versus effect question -- is the connector messed up and not loading on boot (causing the DNS failures), or are repeated DNS errors crashing the connector?

If your Exchange server has lost the connector, it is not going to work. Consider backing up your information store (twice) and reinstalling Exchange.

If the missing connector is the effect rather than the cause, then check the DNS settings on the server. Use nslookup to check that the addresses you think are DNS servers actually ARE DNS servers, and are reachable.

Good luck.

by jdavis

I ended up reloading NT and reinstalling Exchange. Still outside email wouldn't work. Come to find out our domain name was in a grace period, because it hadn't been re-registered. I found that out through our ISP. Got registered and everything works.

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