Having successfully killed my (Centos 7) mail server I have had to build a new
one.
Thankfully I had a server build that I was about to start configuring as my
new web server.
I appear to have set everything up okay, Exim, SpamAssassin, ClamAv, Dovecot,
Postgresql, httpd etc.
Everything appears fine apart from when I try to connect to my web server.
Whatever tried to connect suffers from a delay, and either times out or works
eventually.
I started off with problems connecting Exim to Postgresql on the web server. I
then found that I couldn't connect using psql, or using Perl DBD-Pg. I then
found I couldn't SSH or SCP, dispite them both being on the same subnet.
The more I use the new system, better it appears to be, but the delay is still
there.
name resolution isn't the problem as I can nslookup both ways without
problems, and specifying IP addresses makes no difference. For testing I
have disabled the firewall and selinux and that made no difference.
If I try to connect the other way there is no delay, but I cannot access the
Postgresql server on my new mail server from the web server.
Anyone got any ideas?
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