Cannot Send Emails to a Specific Domain 1

[C5Thunder]

I've recently run into the following problem:

I cannot send emails from my company (me@mycompany.com) to a specific domain (recepient@othercompany.com) for no apparent reason. I can send to anyone else on the internet without any problems.

I can also receive email from anyone on the internet (including the company that i cannot send to) with no issues at all.

We are both running Exchange 2000 Server environments with the latest patches.

Any help would be appreciated....

Thanks in advance

 

[phishe]

Can you ping the domain your trying to send emails to?

 

[C5Thunder]

Yes i can ping by name without a problem.

 

[brontosaurus]

Have you or your ISP made any DNS changes recently? You may need to call your ISP to confirm...

 

[tom11011]

When you send the email, do you get a bounced message back? If so what does it say and what is the error number.

 

[fluid11]

They probably have you on a blocked list. Call them and ask or send an email to their administrator from another domain.

You should also check sites like this -->

http://www.mail-abuse.org/,

to see if you are on any of their lists.

ChrisP ---------------------------------------
If someone's post was helpful to you, please click the box "Click here to mark this post as a helpful or expert post".

 

[C5Thunder]

Afte further testing it appears that i can only send to the administrator@othercompany.com but not anyone else. I have verified that i am not on anyone's block list, and that they can receive mail from other addresses (i.e. my home email).

I get the following message:

Reporting-MTA: dns;mail.othercompany.com
Received-From-MTA: dns;mail.mycompany.com
Arrival-Date: Thu, 20 Jun 2002 11:48:05 -0400

Final-Recipient: rfc822;joeuser@othercompany.com
Action: failed
Status: 5.1.1

 

[jaksen112]

I have this same problem sometimes with random domains, still kinda boggles me b/c i can telnet into their server with no prob. 01110000

 

[fluid11]

Ask the administrator at othercompany.com if they are hosting their own mail server. I've seen this before where their ISP is hosting their mail server and the ISP is blocking an entire IP block for whatever reason. ---------------------------------------
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[C5Thunder]

Well the issues has been resolved. The problem turned out to be DNS on MY side. My external DNS hosting recently changed from one site to anothor, and the person making the changes did not inform me. Thanks to everyone for their help, especiall Bronto who alerted me to this in the first place.

Nothing like a secret DNS switch to ruin your day....