Bounce backs Share on Facebook Post on reddit Tweet on Twitter Share on LinkedIn Home › Forums › Server Operating Systems › SBS 2000 / 2003 / 2008 / 2011 › Bounce backs This topic has 2 replies, 3 voices, and was last updated 7 years, 7 months ago by scurlaruntings. Viewing 1 post (of 1 total) Author Posts leastcmplicatedMember Apr 15, 2013 at 8:43 pm #161349 I’m having issues sending to 2 domains. I get the same bounce back each time, this is an address that I’ve sent to dozens of time before. Now I’m getting this: mydomain #5.5.0 smtp;550 myip is not allowed to send mail from mydomain MX records are fine. I’ve tried to google this bounce but I am coming up with nothing; I’m hoping someone here can help… please… :) Author Posts Viewing 1 post (of 1 total) You must be logged in to reply to this topic.