>Apparently we have been getting SMTP_DELIV_FAILED whenever we try to 
>send mail to [EMAIL PROTECTED]  Some of our customers however 
>can get mail to [EMAIL PROTECTED] with no problem from their 
>other mail servers.
>
>I can send mail to them from my sendmail server, but not imail.
>
>What could be going on?  Is my server blackballed somewhere?

go to www.samspade.org or mail-abuse.org and check your mail server's ip out.0

>   We try very hard to fight spam, so I doubt we are on any spam 
> list.  Can this be the case as well?

If you're rejected for blackhole reasons, you should have a 5xx fatal 
error from the other mail server in your Imail logs.  Do you?

Len


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