Put everything under mail.yourdomain.com
Unless you have some strange firewall rule requirements, there is no
real technical advantage, and some real technical disadvantages..
(including paying for multiple certs)
When you get big enough to worry about how to spread out loads, invest
in a load balancer ;) That is what is is designed for.
On 2021-10-15 8:15 a.m., Leandro Santiago via mailop wrote:
Hi list,
In which scenarios are there advantages on having IMAP and SMTP on
different IPs?
I've been managing small servers using Postfix for smtp and Dovecot for
mailbox, all in the same server using the same IP. But I'd like to know
how widely used this scenario is by others, especially more experienced
folks, and why.
What factors should affect such "splitting"? Performance, security , IP
reputation or anything else?
I am mostly interested in office mail usage, but it's also interesting
to hear from other usages.
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