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When resolving my email domain and setting up the mail on an email client, I realized both setting POP to pop.mx.server.com and SMTP to smtp.mx.server.com works just as well as setting both POP and SMTP to mx.server.com, as long as I kept both the domain resolution and the email client preferences consistent.
Are they identical?
KMC
Posted 2017-10-20T18:56:38.623
Reputation: 1 537
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It's largely irrelevant if it's your own mail serve for personal user. All these do are point to an IP address.
When you are running email for others, they sometimes expect an smtp and pop3 name - and in large orgs SMTP and POP3 are sometimes handled differently - So if this is someone else's mail server use the suggested values as it gives them freedom to better manage their system without breaking things.
davidgo
Posted 2017-10-20T18:56:38.623
Reputation: 49 152
probably a redirect at the server end. Mine used to be the same, years ago. – Tetsujin – 2017-10-20T19:00:13.843
but how would the server know where to redirect? by port no? – KMC – 2017-10-20T19:22:15.630
I have no clue, sorry, just reporting an anecdotal memory – Tetsujin – 2017-10-20T19:27:00.607
Almost certainly by port. POP3 and IMAP (sending and receiving, secure and non-secure) all use separate ports. – Anaksunaman – 2017-10-25T02:01:10.147