Hello,
As I said earlier, this is a bit confusing for me too since we did a lot of tests.
Here is a better explanation.
If noel's Domain is Noel.com; Webserver is 127.0.0.10 and Mailserver is 127.0.0.15:
NOEL.COM. IN A 127.0.0.10
NOEL.COM. IN MX 10 MAIL.NOEL.COM
MAIL.NOEL.COM. IN A 127.0.0.15 --> Note that here we have an
A record
now Augusta's nameserver must have an A record or virtual hosting for augusta.eukservers.com as well as MAIL.NOEL.COM
Here is a variation:
======================
NOEL.COM. IN A 127.0.0.10
NOEL.COM. IN MX 10 MAIL.NOEL.COM
MAIL.NOEL.COM. IN CNAME AUGUSTA.EUKSERVERS.COM
--> Note that here we have a
CNAME record
======================
Without the above, in some cases ( i guess when there was only CNAME pointing to mailserver without domain's hosting account on it), the local mailserver reported 550, Action not taken, mailbox not local and it did not send the mail. While in other cases, when there was an A record but the hostname did not match with MX record/PTR, the mail was sent and accepted by remote server, but never delivered. I did receive some failures after 24-30 hours but it was not possible to identify which messages and under what configuration they had failed.
In Linux/WHM/Cpanel, there is usualy only one Box, which also servers as a nameserver to the hosted domains, so this need does not arise there.
Hope this solves everyone's problem and finds and opening to another tunnel on Yahoo and others.
Regds
IJ
PS: Are Nigel's and RSVEccosse's mails working flawlessly now? In that case we have found the solution??