Lowest numbered MX record points to local host

[Heritz]

Hello all,

I have a dedicated server with WHM 11.2.0 and CentOS 4.5. Lately, all the emails cannot be delivered because of the following error in the exim_rejectlog:

lowest numbered MX record points to local host

For instance:

2007-11-25 04:34:26 H=s3.computrabajo.co.uk [69.59.28.133] F=<apache@s3.computrabajo.co.uk> temporarily rejected RCPT <gerencia@jobe65.com>: lowest numbered MX record points to local host

Do you guys have any idea about why could be this happening? This happens for all the domains. Every time I restart the DNS service (BIND) the email starts to work perfectly, but after a few days, it starts to bounce everything.

Thanks for your help folks!

[rbalaji]

hi,

login to WHM and go to Main >> DNS Functions >> Edit MX Entry

set MX priority to 0 for the related domain and save.


This will fix the mail issue.

Thanks

[Heritz]

Thanks rbalaji.

Actually all the domains in the server have priority 0 for the MX record. But the problem still happens from time to time. Everytime it happens, I just restart the DNS server and the mail starts to work again.

Any ideas?...

[Heritz]

Hi all,

Just for reference, in case someone else has the same issue:

For some reason, when I create the accounts in my WHM 11.15.0, the file /etc/localdomains is not getting updated. That file is important for some reason for the mail delivery if the MX entry of the domain is pointing to localhost.

So, the solution if you get this error: just go to your WHM, then "Edit DNS Zone", select the domain you want to fix, click "Edit" and then in "Save". That's all. Clicking "Save", will automatically put the entry in the localdomains. Obviously this will fix the error.

I hope it helps, I had a really bad time trying to figure this thing out!

[andren]

Originally Posted by Heritz

Hi all,

Just for reference, in case someone else has the same issue:

For some reason, when I create the accounts in my WHM 11.15.0, the file /etc/localdomains is not getting updated. That file is important for some reason for the mail delivery if the MX entry of the domain is pointing to localhost.

So, the solution if you get this error: just go to your WHM, then "Edit DNS Zone", select the domain you want to fix, click "Edit" and then in "Save". That's all. Clicking "Save", will automatically put the entry in the localdomains. Obviously this will fix the error.

I hope it helps, I had a really bad time trying to figure this thing out!

Thank you, that fixes it.
One would think cpanel would be able to fix it...

[karlos]

Thanks!! it works!!

In my case WHM writes the subdomains of the account but not the main domain

[seahorse]

Originally Posted by Heritz

So, the solution if you get this error: just go to your WHM, then "Edit DNS Zone", select the domain you want to fix, click "Edit" and then in "Save". That's all. Clicking "Save", will automatically put the entry in the localdomains. Obviously this will fix the error.

I hope it helps, I had a really bad time trying to figure this thing out!

even though i upgraded to the latest release version...
i have this problem too.... not able to receive emails.

the above solution, edit dns, then save without doing anything.. works.

[Apoc]

We had this problem today too on one server of a client. What I don't understand is that cPanel doesn't have some kind of script to simply check all the domains on the server (based on cPanel's configuration) and then checks with the localdomains file to see whether it's consistent.

Should be very easy to implement and to be honest I don't understand why it doesn't already have this by default if cPanel relies on the localdomains file for mail and such.

[cpanelkenneth]

Originally Posted by Apoc

We had this problem today too on one server of a client. What I don't understand is that cPanel doesn't have some kind of script to simply check all the domains on the server (based on cPanel's configuration) and then checks with the localdomains file to see whether it's consistent.

Should be very easy to implement and to be honest I don't understand why it doesn't already have this by default if cPanel relies on the localdomains file for mail and such.

You mean like this:

/scripts/checkalldomainsmxs

?

[neiderlaander]

Hello all, noob here, go easy on me I recently ran in to a problem with the priority record of 0 being used for an offsite MX server, and when using a priority of 0 while pointing to a non-local host the mail wouldn't work. When setting the priority to 1, the off-site mail flowed normally. I was wondering if the 0 priority ALWAYS points to localhost only? thanks....

[jiju]

Hello,

When you set up MX entries at the DNS, you must be aware that the lowest number has the highest priority. So if the " 0 " is pointed with the domain name itself, it uses the localhost ie the same server on which that domain is hosted. To set a domain to use an external mailbox, MX entry for the same at the DNS should be pointed with " 0 " so that it will get the highest priority. :