SMTP mail not sending / Browsing issue.

Hello,

I have a problem that i can't seem to work out.

We are running Exchange 2000 via SBS and 3 days ago our server stopped
sending external mail. We had a look and the messages were sat in the queue
with 'Enumerate 100 Messages'. So we've tried that and nothing happened.
We've checked that the SMTP container details are correct and we've also
ensure all the DNS server address are correct.

What is also worrying is that the client machines are able to browse the web
through the ISA server in SBS but we aren't able to browse from the server
itself. We can browse via IP but not via name.

Can anyone suggest what we might be missing?

Many thanks.

dabutler
Tue Oct 14 15:47:57 CDT 2003

Hi Charlie,

Thank you for using Microsoft Technical Support Newsgroups.

Sounds like you may have a problem with DNS lookups on the server. It's
possible that your ISA DNS packet filter has been removed or disabled.
Verify that your default ISA DNS packet filter exists and is set to allow
packet transmission, UDP Port 53, Send/Receive.

It's also possible that since your server should be set to look to itself
for DNS and have forwarders configured under DNS Management, verify that
recursive lookups are allowed. Also, ensure that you have valid forwarders
enabled - you can try 4.2.2.1 if your forwarder is no longer valid.

Once again, thank you for using the newsgroups.

Best Regards,



David Butler - MCSE NT4/2000
Microsoft Technical Support

Get Secure! - www.microsoft.com/security

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