?
Solved

451 All MX servers are unavailable

Posted on 2013-02-05
1
Medium Priority
?
3,691 Views
Last Modified: 2013-02-21
Hi,

When i send to one particular domain i get this error for our users. anybody know how to fix this one?
0
Comment
Question by:mtevansmtgoat
1 Comment
 
LVL 1

Accepted Solution

by:
EastThames earned 1500 total points
ID: 38860582
SMTP code 451 is due to an error on the server you are sending the email to. Could be because they are having problems, or are using an anti spam technic called grey-listing, or have black listed you and are not accepting your connection.
Check you can send via gmail, and have a look at the smtp transaction logs at your end.
Get in contact with the remote email administrators to help you out.
0

Featured Post

Get expert help—faster!

Need expert help—fast? Use the Help Bell for personalized assistance getting answers to your important questions.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Have you ever stumbled upon a software that is so great that you just love? It happened to me. Love at first sight. Filezilla Server.   Ok its not the most advanced ftp server I've came across. But its a fairly simple piece of software to get the …
If you try to migrate from Elastix to Issabel, you will face a lot of issues. These problems are inevitable but fortunately, you can fix them. In the guide below, I will explain how I performed the migration while keeping all data and successfully t…
In this video, Percona Director of Solution Engineering Jon Tobin discusses the function and features of Percona Server for MongoDB. How Percona can help Percona can help you determine if Percona Server for MongoDB is the right solution for …
In this video, Percona Solutions Engineer Barrett Chambers discusses some of the basic syntax differences between MySQL and MongoDB. To learn more check out our webinar on MongoDB administration for MySQL DBA: https://www.percona.com/resources/we…
Suggested Courses
Course of the Month4 days, 22 hours left to enroll

601 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question