Could you be blocked from sending to them because you are an open relay site and someone may have you blacklisted?
Check out your IP address on one of the Blacklist search engines to check it out. Nate Couch EDS Messaging > ---------- > From: Kim Schotanus > Reply To: Exchange Discussions > Sent: Monday, August 11, 2003 4:48 AM > To: Exchange Discussions > Subject: error messages 2 > > This is the second type of error message that people get, and a lot more > frequent: > > The email address could not be found. Check the email address and send > again. The MTS-ID of the original message is .... > MSEXCH:IMS:BMUK:Freyung:BMUKNT02 3550 (000B09B6) 550 5.7.1 > <[EMAIL PROTECTED]>...Relaying denied > > Anyone have a clue? > > _________________________________________________________________ > List posting FAQ: http://www.swinc.com/resource/exch_faq.htm > Web Interface: > http://intm-dl.sparklist.com/cgi-bin/lyris.pl?enter=exchange&text_mode=&la > ng=english > To unsubscribe: mailto:[EMAIL PROTECTED] > Exchange List admin: [EMAIL PROTECTED] > > _________________________________________________________________ List posting FAQ: http://www.swinc.com/resource/exch_faq.htm Web Interface: http://intm-dl.sparklist.com/cgi-bin/lyris.pl?enter=exchange&text_mode=&lang=english To unsubscribe: mailto:[EMAIL PROTECTED] Exchange List admin: [EMAIL PROTECTED]

