Hello,
I've noted that if I enable "Fix incorrectly set sender for outgoing mail" in the mail settings, all the emails sent from users on the server, the "sender" is changed with the "Recipient".

For example:
If I send an email (using for example the webmail) from "sender@mydomain1.com" to "recipient@mydomain2.com", the "recipient@mydomain2.com" see for the "reply" its email and not that one of the sender.
Both domains "mydomain1.com" and "mydomain2.com" are on the same server.
Instead works good for all the emails sent to the external users.
So, is it a bug?
At the moment I've disabled this function otherwise no-one can reply to the email (they would send an reply-email to themselves).
I've noted that if I enable "Fix incorrectly set sender for outgoing mail" in the mail settings, all the emails sent from users on the server, the "sender" is changed with the "Recipient".

For example:
If I send an email (using for example the webmail) from "sender@mydomain1.com" to "recipient@mydomain2.com", the "recipient@mydomain2.com" see for the "reply" its email and not that one of the sender.
Both domains "mydomain1.com" and "mydomain2.com" are on the same server.
Instead works good for all the emails sent to the external users.
So, is it a bug?
At the moment I've disabled this function otherwise no-one can reply to the email (they would send an reply-email to themselves).