3 Replies Latest reply: Jul 10, 2013 10:07 AM by bwmarkle
dmoberly Level 1 (0 points)

There are a few clients that I email and I know their addresses are valid but I receive a "delivery has failed" message every time I send them an email. If I send it from my iPhone, it goes through fine.  When I send from my iMac, it gets returned. Here is a portion of the return message that may/may not help.


Reason: SMTP transmission failure has occurred

Diagnostic code: smtp;554 Denied [fd9e2d15.0.510675.00-2299.781357.p01c12m003.mxlogic.net] (Mode: normal)

iMac, OS X Mountain Lion (10.8.4)