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sendmail : mail not delivering to valid email id, if unknown internal user is present

Hi,

I despretly need help, We are using redhat 5 and using sendmail as our MTA.

Recently we observed that when we send a mail with If one unknown internal user is present in addressee , then mail not delivering to valid internal email id and valid external email id as well.

mail coming as a single physical file and when sendmail see the user unknown for local domain, mail stopped processing by issuing the following in log

User unknown
<-- RSET
250 2.0.0 Reset state commands

I would be very greatful, If somebody shows the solution for this problem.

My manager is on my head for this.

Regards,
Prakash.

Quote:

Originally Posted by kvvsprakash (Post 4918133)

What do you mean by Red Hat 5. It was released in 1997. It is long forgotten. If you mean Red Hat Enterprise Linux 5 then you should contact Red Hat support.