Question Is there a way to change SMTP server address?

[kylianjay]

Server operating system version

Ubuntu 22.04.05 LTS

Plesk version and microupdate number

18.0.64

Hi,

I'm writing as I'm not sure this is possible in the first place but I can't seem to find any coverage of this on the Plesk forums, neither anywhere else.
Currently, I'm using SMTP server to send mail from Gmail client as my domain. (In Gmail: Send as... option.). But the SMTP server for Plesk is random.name-ip-address.plesk.page. Can I change this domain to say smtp.mydomain.com, or a general more user friendly URL to set up SMTP server? Would be great to get some advice.
Thanks in advance.