[CentOS] email Server for CentOS 7

Mon Oct 1 16:54:01 UTC 2018
Kenneth Porter <shiva at sewingwitch.com>

--On Monday, October 01, 2018 6:37 PM +0200 Peter Eckel 
<lists at eckel-edv.de> wrote:

> I fully agree with most of the former, except for the Google part. Google
> is to privacy what a shark pool is to a carp. If possible, avoid Google
> at all cost, and particularly for E-Mail. There are services around that
> cost a very small amount of money (e.g. mailbox.org or posteo.de),
> provide a very reasonable service and do *not* peek into your mail for
> advertisement targets and sell your data to their customers.

Fastmail looks attractive to me as it's IMAP-friendly. I run my own server 
but I'm recommending to my family that they move their accounts there if I 
"get hit by a bus".


I mostly run my own server because it's easy to create an infinite number 
of disposable "plussed" addresses as website login names. I've got a 
sendmail rule that lets me use a dot instead of a plus sign in such 
addresses to get around the websites that refuse a plus sign in an address.


> You should also run your own DNS in that case, as many modern features of
> secure mail services are tightly linked to DNS (e.g. SPF, DKIM, DMARC
> etc.). DNSsec is preferred.

This can be split. I let my hosting provider host my public domain name on 
their DNS servers. But I run a caching nameserver on my mail server to do 
the various lookups it requires. A forwarding nameserver for blacklist 
lookups is NOT recommended because of the way the various DNS-based 
blacklisting databases license their service.