Am 05.04.2014 15:38, schrieb Germain:
> Thank you for the accurate details !
> 
> When I issue the command:
> 
> nslookup mx1.adtlas.com NSPRI.ADTLAS.COM
> 
> I receive that, and it seems to me correct:
> 
> Server:         NSPRI.ADTLAS.COM
> Address:        88.191.117.125#53
> 
> Name:   mx1.adtlas.com
> Address: 88.191.117.125
> 
> As I wrote in my previous reply, my FQDN is mx1.adtlas.com and I think the
> "mail" prefix is not mandatory ! 
> I may use what I want, right ?

yes, doing so consistent everywhere

> But my problem was due the missing "smtp_helo_name = mx1.adtlas.com", so
> I've added it in the main.cf file before to restart POSTFIX :-)

no, you did not get that far because your PTR needs to be "mx1.adtlas.com" too

[harry@srv-rhsoft:~]$ nslookup 88.191.117.125
Server:         127.0.0.1
Address:        127.0.0.1#53

Non-authoritative answer:
125.117.191.88.in-addr.arpa     name = adtlas.com

> Unfortunately I will hire nobody right now: I'm a 62-year old Swiss retiree
> which has done painfully its two innovative Web sites by learning alone by
> himself all pieces of the puzzle to set them up and to keep them running:
> PERL, JavaScript, HTML, etc.
>  
> But sometimes I've to go on forums like this one to discuss with experts as
> you, which I thank a lot for their appreciated help... and their patience
> too :-)

no problem - only please be very careful in case of a mailserver, that
brings great responsiblity and in case of misconfigurations playing
open relay and spread spam or malware it affects anybody out there!

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