Avatar of deklinm
deklinm
Flag for United States of America asked on

Sending Email Error 550

I am trying to email a customer who's email address resides on secureserver.net.  Each time I send them an email it bounces back with the following information:

550 5.7.1 SPF unauthorized mail is prohibited. (in reply to DATA command)

Action: failed
Status: 5.7.1
Remote-MTA: dns; smtp.secureserver.net
Diagnostic-Code: smtp; 550 5.7.1 SPF unauthorized mail is prohibited.


How do I fix this?
DNSExchangeEmail Servers

Avatar of undefined
Last Comment
Alan Hardisty

8/22/2022 - Mon
ASKER CERTIFIED SOLUTION
Alan Hardisty

Log in or sign up to see answer
Become an EE member today7-DAY FREE TRIAL
Members can start a 7-Day Free trial then enjoy unlimited access to the platform
Sign up - Free for 7 days
or
Learn why we charge membership fees
We get it - no one likes a content blocker. Take one extra minute and find out why we block content.
Not exactly the question you had in mind?
Sign up for an EE membership and get your own personalized solution. With an EE membership, you can ask unlimited troubleshooting, research, or opinion questions.
ask a question
chanderpal singh rathore

Sometimes our ip is blacklisted by the receiver server by founding any unusual content .
 We don't have any idea about that content and our ip trust level is decreased

So mail them to add your ip to their whitelist or remove from blacklist.
Alan Hardisty

Why?

The clue is in the rejection, namely "SPF unauthorized mail is prohibited" - your SPF record prohibits your server from sending.

A correctly published SPF record - or the removal of the SPF record should solve the problem.

Suggesting that they whitelist you is not the correct way to solve the problem.
chanderpal singh rathore

@alanhardisty
ya you may be right but mostly blacklisting is the reason for the bouncing back your mail ans rejected by the receiver end
I started with Experts Exchange in 2004 and it's been a mainstay of my professional computing life since. It helped me launch a career as a programmer / Oracle data analyst
William Peck
Alan Hardisty

"mostly blacklisting is the reason for the bouncing back your mail" - That may be true, but in this instance, it isn't.

Servers reject email for a multitude of reasons, but the specific reason is actually stated in the rejection message as posted by Deklinm and that reason is because of an Invalid SPF record.

If the reason was due to being listed on a blacklist, then the error message would not specifically state SPF as the reason.