Resolved Mails not sent and remain in mail queue

[Nivek97]

Server operating system version

CentOs 7.9.2009

Plesk version and microupdate number

18.01.51

Hello everyone,
I have a problem with mail and qmail.
Some mails are sent correctly through webmail while most remain in the mail queue and do not reach the recipient.
What can I fix?

 

[Peter Debik]

A good start to troubleshoot this can be to look into /var/log/maillog what happens to a mail you try to send.

 

[Nivek97]

A good start to troubleshoot this can be to look into /var/log/maillog what happens to a mail you try to send.

Below are the logs /var/log/maillog .
I've tried sending a mail to an address that never receives mail from the server.
I state that the sending takes place through the roundcube webmail.

 

[Peter Debik]

What's the output of telnet smtp-in.libero.it 25?

 

[Nivek97]

What's the output of telnet smtp-in.libero.it 25?

 

[Peter Debik]

The message explains well why your server cannot connect to the target host. It is blocked by the target host.

Simply go to https://csi.cloudmarkc.om/reset-request/?ip=<your host's ip> to unblock it or ask the recipient domain owner to do that for you.

 

[Nivek97]

The message explains well why your server cannot connect to the target host. It is blocked by the target host.
View attachment 23264
Simply go to https://csi.cloudmarkc.om/reset-request/?ip=<your host's ip> to unblock it or ask the recipient domain owner to do that for you.

Thank you, I proceeded to forward the ip unlock request.
Is it possible that although each domain and hosting has its own ip, it is used for sending emails and consequently the general ip of the server where plesk is installed is compromised?

 

[Peter Debik]

Please check the "outgoing mail mode" in Tools & Settings > Mail > Mail Server Settings. There is an option where the domain IP is used, but there is also an option where one defined IP is used for all.

 

[Nivek97]

Please check the "outgoing mail mode" in Tools & Settings > Mail > Mail Server Settings. There is an option where the domain IP is used, but there is also an option where one defined IP is used for all.

I didn't find this step with qmail. I find it if I set postfix

 

[Nivek97]

Please check the "outgoing mail mode" in Tools & Settings > Mail > Mail Server Settings. There is an option where the domain IP is used, but there is also an option where one defined IP is used for all.

I can't change outgoing mail ip

 

[Peter Debik]

If you cannot change the IP, then there is only one IP configured. In that case all mail will be sent from that IP.

 

[Nivek97]

If you cannot change the IP, then there is only one IP configured. In that case all mail will be sent from that IP.

can you tell me how and where to change the output smtp ip?