[IMail Forum] Mail rejected.

[Mike Prince]

One of the domains we host mail for gets invalid domain when we try to send mail to from another ISP . It only seems like mail from certain ISP's won't work . We do know that last week out connection to the internet went down for about 45minutes and that our backup dns service had problems at the same time nslookup showed them resolving to someone elses ip address. That has been corrected and they are resolving correctly. Could their mail servers be caching rhe bogus ip information. If you could send a test message to [EMAIL PROTECTED] and if it bounces give me some insight into the error message you received it would be appreciated.   Thanks,   Mike Prince Micro-Prince Computers