Hi,

I've used different hostnames (and therefore different certificates) on the same IP for years on one service.

And different IPs with different IPs on another service.

And same IP, same hostname (same certificate) on another.

Makes no difference.  Do what suits you.

Tim

On 15/10/2021 16:15, 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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--
Tim Bray
Huddersfield, GB
t...@kooky.org

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