<div dir="ltr"> If you have a busy mail setup and your Bricks are spindles, you will have a lot of performance issues even if the Cluster is in a local DC.<div>Dovecot replication works well in Master-Master setup<br><div dir="rtl"> </div></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Mon, Dec 28, 2020 at 12:05 AM Zenon Panoussis <<a href="mailto:oracle@provocation.net" target="_blank">oracle@provocation.net</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><br>
> For such a project, I would simply configure the SMTP server do to <br>
> protocol-specific replication and use a low-TTL DNS name to publish <br>
> the IMAP/Web frontends.<br>
<br>
Either you know something about mail servers that I would love<br>
to know myself, or else this idea won't work. That's because<br>
even if you could configure three SMTP servers as relays to<br>
each-other (which you cannot), IMAP actions (move, delete etc)<br>
do not propagate. So, one day you organise your mail nicely<br>
in folders, next day you find all of it back in your inbox.<br>
Or you go looking in your Sent folder for that mail you sent<br>
last week, and it's just not there. That kind of thing would<br>
probably frustrate everyone much more than a bit of latency.<br>
<br>
Z<br>
<br>
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</blockquote></div><br clear="all"><div><br></div>-- <br><div dir="ltr"><div dir="ltr">Respectfully<div>Mahdi</div></div></div>