On 2022 Feb 25, at 12:05, post...@ptld.com wrote: >> (The reason to do this is to make the move over seamless for the user of >> that domain, and that it how their previous host had the mail setup. >> Duplicating the setup means I do not have to go in and change the mail >> servers on every client computer, phone, and tablet, so this is desirable. >> But secure submission is required by the server at all times, so if that >> gets messed up, I've gained nothing.
> This seems a little confusing and maybe convoluted to me, unless im reading > this wrong. > > MX records and settings in user's mail client programs are two different > things. A user sending an email from a client program like Thunderbird does > not use MX records. It looks up the IP and port of the domain saved in the > "server name" and "port" settings. No, they use "mail.example.com" which normally would not exist, both for IMAP and SMTP. If the clients do not care that the mail server is not the mailserver, perhaps I am overthinking this. -- Nothing is impossible for those who don't have to do it.
