Ask your SMTP logs whether your outbound transmission was refused or whether they send you a full blown NDR after accepting your mail. If they accepted the mail, their problem for sure. If they refused the mail and you had no other issues with any other outbound mail in the same timeframe, probably their problem.
_____ From: Sam Cayze [mailto:[EMAIL PROTECTED] Sent: Wednesday, January 02, 2008 10:16 PM To: MS-Exchange Admin Issues Subject: RE: 5.5.0 smtp;550 domain of forward path is not allowed Not that easy Carl, but thanks. I can't reproduce it now doing either... Obviously something intermetent, but I still want to know why. Curisousity, and fear of it being saome indicator of something worse... _____ From: Carl Houseman [mailto:[EMAIL PROTECTED] Sent: Wednesday, January 02, 2008 8:04 PM To: MS-Exchange Admin Issues Subject: RE: 5.5.0 smtp;550 domain of forward path is not allowed You want to know whether the problem is yours, or the recipient's. Sign on to gmail or any other mail system besides yours that uses a different ISP to reach the Internet backbones, and send a message to the same address. Does it get there or is it NDR'd? Your question is now answered. _____ From: Sam Cayze [mailto:[EMAIL PROTECTED] Sent: Wednesday, January 02, 2008 8:53 PM To: MS-Exchange Admin Issues Subject: RE: 5.5.0 smtp;550 domain of forward path is not allowed Still can't find anything regarding this NDR. Any ideas? _____ From: Sam Cayze [mailto:[EMAIL PROTECTED] Sent: Wednesday, January 02, 2008 2:27 PM To: MS-Exchange Admin Issues Subject: 5.5.0 smtp;550 domain of forward path is not allowed Never seeing this one... I just got it. Is it something on my end, or the recipient? Should I be alarmed? Exch 2003, no Smart Host. Thanks! I am googling now, not finding much on this error.... ~ Ninja Email Security with Cloudmark Spam Engine Gets Image Spam ~ ~ http://www.sunbeltsoftware.com/Ninja ~
