jeffkunkle

A follow up, in case anyone else comes across this problem with GoDaddy as the webhost/registar and Office365 as the email host.... the first two calls to GoDaddy they said everything was okay on their end and it was Office365's problem. But the emails were not even making it to Office365. A third call and the helpful tech was able to "set our domain name as remote" so the emails would pass through. Thanks,

I really appreciate your help. I'm trying out PHPmailer now. Thanks!

Attached is one of the bounce backs. To me, it seems that changing the 'From: " in the $headers to my email address and have the SMTP authentication included, it would attempt to send from my email/SMTP/authentication instead of the $email_from address since it can't authenticate that and they are always different, depending on who fills out the form. Thanks, ReturnedMail.txt

Yes, it was working before. Then it stopped working at the beginning of August. I added "connectors" and "safe lists" with Office 365 and message trace shows that the emails are not even making it to Office 365. Our site is hosted with GoDaddy, and everything checked out fine there also. GoDaddy thinks that they were not doing reverse DNS lookups on the sending email address, but started to. When looking at the default email account on GoDaddy (but not on Office 365) there are a ton of "Mail delivery failed. Returning message to sender" messages. Thanks for you help.

First time poster and noob at PHP. My web form stopped sending emails and I believe that it needs SMTP authentication (with port 587 and TLS encryption) for Office 365. Can someone help me to add that? Attached is the PHP. Thanks in advance! php.txt