One of our customers is trying to send an email to us with an attachment. When he tries he gets the following error. He is able to send emails without the attachment, and is also able to send the same email to his personal email address. The attachment size is 1MB with a .zip extension. Both of which normally work fine for us. I have tried to find out what this error actually means without luck. Any help would be greatly appreciated
The e-mail system was unable to deliver the message, but did not report a specific reason. Check the address and try again. If it still fails, contact your system administrator.
< mx2.sendercompany.com #5.0.0 smtp; 5.1.0 - Unknown address error 554-'Message Denied: Restricted attachment (Mode: normal)' (delivery attempts: 0)>
MS Server 2003 Std x86
Exchange server 2003 std
All incoming email is routed through spamsoap and then forward to us