After domain migration cannot send email from Server 2 to Server 1

[MindServer]

Hi,

I have a domain "mydomain.com" which is used for server's create hostnames: hostname1.mydomain.com, hostname2.mydomain.com

I pointed this domain to a new server, the hostname and emails work correctly but the second server (hostname2.mydomain.com) cannot send emails to the firtst server (hostname1.mydomain.com, where point the domain "mydomain.com"). Always return this message:

SMTP<< 550 "REJECTED - Bad HELO - Host impersonating [hostname2.mydomain.com]

Other servers and computers can send emails to "hostname1.mydomain.com" without problems.

Why happens this?.

Thank you very much. Have a nice day.

 

[kodeslogic]

Delete all traces of mydomain.com on the old server from /etc/mailhelo, /etc/localdomains, /etc/remotedomains, and other if any.

 

[MindServer]

Hi,

I cleared data in the mentioned files in the old server but not solved the problem: /etc/mailhelo, /etc/localdomains, /etc/remotedomains

Any other file?, because "/etc/" directory have many folders and files.

Thank you very much. Have a nice day.

 

[MindServer]

Maybe this is a problem?:

1- I created subdomain hostname2.mydomain.com
2- Changed all record's IPs (A, MX, TXT, etc.) for the Server 2's IP.

Maybe should remove this subdomain and only create "A" record?. The hostname not need other records? (MX, TXT, etc.).

Thank you again.

 

[cPRex]

I would not expect you to need to create a subdomain for the hostname. Just adding an A record to the main "mydomain.com" zone would be enough for that new hostname to resolve. I'd recommend removing that to avoid confusion.

 

[kodeslogic]

Yes, the subdomain for the hostname ( hostname2.mydomain.com ) not required

Maybe should remove this subdomain and only create "A" record?. The hostname not need other records? (MX, TXT, etc.).

Correct, Just add an A record for hostname2.mydomain.com to the main "mydomain.com" zone.

 

[MindServer]

Yes, the subdomain for the hostname ( hostname2.mydomain.com ) not required


Correct, Just add an A record for hostname2.mydomain.com to the main "mydomain.com" zone.

Thank you.

The problem is solved, I removed the subdomain and only created "A" record, now send emails.

But I have a new warning, hostname2.mydomain.com send email to hostname1.mydomain.com correctly but in file "/var/log/exim_mainlog" appear this warning:

[hostname1.mydomain.com IP] SSL verify error: certificate name mismatch: DN="/CN=hostname1.mydomain.com" H="mydomain.com"

Any idea about why happens this?. Thank you very much. Have a nice day.

 

[kodeslogic]

Check out the below article:

Exim fails to receive mail with error "SSL verify error: certificate name mismatch"

Symptoms When sending mail to your server, the following error is produced: SSL verify error: certificate name mismatch Mail is not delivered or is extremely delayed in delivery. Description ...

support.cpanel.net

 

[MindServer]

Hi friend,

I did many tests and still have this error:

[hostname1.mydomain.com IP] SSL verify error: certificate name mismatch: DN="/CN=hostname1.mydomain.com" H="mydomain.com"

Can you check if you have this message in the file "/var/log/exim_mainlog" when hostname email account ([email protected]) send a email?

The email is sent correctly, but I always have this message in "exim_mainlog".

Thank you very much. Have a nice day.

 

[cPRex]

I see that error twice in my personal server's mail log, but they are both unrelated to the server's hostname.