[CentOS] Mailers and records MX

[Simon J Mudd]

israel.garcia at cimex.com.cu writes:

>  even more details:
> 
> 1. I use Mailscanner/postfix in the 3 MX's servers.
> 2. Using dig I get exactly the same of what I have in my bind server.
> 3.  http://dnsreport.com/ reports no problem at all.
> 4. I'm not using any greylisting.... Yet.. I'm setting right now
> spamassassin with mailscanner..

See http://www.postfix.org/addon.html

Quoting from the page:

--- quote ---
mailscanner system, works with Postfix and other MTAs. This uses
unsupported methods to manipulate Postfix queue files, and there are
multiple reports of message duplication and/or delivery of truncated
messages.
--- quote ---

It's use is NOT recommended by Postfix's author.  This may not be
the cause of the problem but ...

Simon