Question DANE support and IMAP Port 143

[LRLD]

Server operating system version

Ubuntu 24.04.1

Plesk version and microupdate number

18.0.63 Update #4

Hi everyone,

when the TLSA records are added to the zone, it doesn't add one for port 143, STARTTLS is available on this port so it should have a TLSA record.
It was the same on my old Ubuntu 20.04.6 LTS servers, and it's still not added on my Ubuntu 24.04.1 LTS servers, all the other ports get a TLSA record.

Any ideas? Is this expected? It seems strange that only this port is missing the record.

Kind regards

LD

 

[Polli]

I know it´s an old thread but same issue to me on a Debian 12. No entry for port 143 for imap are made by plesk. This should be a default entry, I think.

 

[learning_curve]

As you already know @Polli we are able to use DANE/TLSA and Plesk without any issues as our config for DANE/TLSA is managed outside of Plesk.
However... @LRLD & @Polli FWIW we block port 143 at server level (before Plesk) anyway, so DANE/TLSA usage on Port 143 is of no concern for us.
Our chosen config is not to permit plain text authentication and/or unencrypted IMAP so STARTTLS is no longer relevant here, if only Port 993 is used.
There's additional config to achieve all this (when using Plesk for mail service) but Port 143 becomes redundant & Port 993 facilitates all IMAP usage.
So a related question related to the opening post, is... Do you still need Port 143? If the answer is yes, then is this only for using old e-mail clients?