Resolved Hostname updated but always "mydomain.localdomain" in the mail system message

[Erwan]

Hi all,

I've changed hostname on a new server (Plesk/Tools&Settings/server settings) : w800.mydomain.com
I can use Plesk with : w800.mydomain.com:8443.
It's ok.

But in the mail system, when i've for example, a failure notice, the message is:
This is the mail system at host w800.localdomain.
I'm sorry to have to inform....

How can i change "w800.localdomain" with "w800.mydomain.com" ?

Thank you.

Erwan

 

[Kaspar]

Check if w800.localdomain is present in /etc/hosts file. If so, change to w800.mydomain.com.

 

[Erwan]

No...

127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4
::1 localhost localhost.localdomain localhost6 localhost6.localdomain6
x.x.x.x w800.mydomain.com w800

 

[Bitpalast]

You can try to edit /etc/postfix/main.cf and add this line

myhostdomain = w800.mydomain.com

Then
# postfix reload
to make the service aware of the new configuration. This is actually an important setting for that I always wondered why Plesk is not doing it, because if the myhostdomain entry is missing, mails sent through webmail are sent by "localhost" identifier which causes issues with recipient spam filters.

 

[Erwan]

Perfect. Thank you Peter.