Is there a way to log and view a log of the actual commands that exchange sends and receives during an exchange of email? I can not send email to 2 companies but can send to anyone else. I can use Telnet to open a SMTP session with their email server and I can send an email that way. I am trying to figure out when in the process the error happens. Can anyone tell me what logging or monitoring to turn on to see this. I get a 7010 event error in the event viewer but it is just a xexch500 command followed by a 504 need to authenticate first and Microsoft says that is normal and should not stop the email from going through. Thanks Douglas Jensen Douglas.Jensen@xxxxxxxxxxxxx <mailto:Douglas.Jensen@xxxxxxxxxxxxx> Voice (952) 402-9821 Fax (952) 402-9815 Network Administrator Scott Carver Dakota CAP Agency, Inc. 712 Canterbury Road Shakopee, MN 55379 www.capagency.org <file:///C:/Documents%20and%20Settings/djensen.SCDCAP/Application%20Data /Microsoft/Signatures/www.capagency.org>