http://www.msexchange.org -------------------------------------------------------I am having problems sending email to one particular exchange server. I have turned on SMTP logging and it appears everything works fine until my server sends a the BDAT command. I think that means that now my server is going to send a binary file. This particular server does not appear to respond to that. The next SMTP command I see is 220 mailserverFQDN Microsoft etc. That response happens several minutes after my BDAT command. It appears to me that this is my server trying again after not getting a response saying it got the message or go ahead and send the binary file. Other email servers respond to the BDAT command with 250 2.6.0 <aLongNumber@MyMailServerInternalName> Queued mail for delivery 2 questions It appears to me that once my server says BDAT #### Last then my server immediately sends the binary file without waiting for a go ahead from the other server. Is that correct? If that is the case, it might be reasonable to assume that my server is sending the binary file and it is being blocked somewhere near the problem external Exchange server. OR could the problem be that my SMTP server is saying its name is the same name as my MX record "mail1.scdcap.org" and this mail queued for delivery has my internal FQDN of MAILSHAKOPEE.scdcap.org? This does not appear to be a problem for other email servers. Douglas Jensen 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 ------------------------------------------------------- List Archives: //www.freelists.org/archives/exchangelist/ MSExchange Newsletter: http://www.msexchange.org/pages/newsletter.asp MSExchange Articles and Tutorials: http://www.msexchange.org/articles_tutorials/ MSExchange Blogs: http://blogs.msexchange.org/ ------------------------------------------------------- Visit TechGenix.com for more information about our other sites: http://www.techgenix.com ------------------------------------------------------- To unsubscribe visit http://www.msexchange.org/pages/exchangelist.asp Report abuse to listadmin@xxxxxxxxxxxxxx