Thanks Reivilob for the reply. I know I have to look at the Community Ed. forum but I'm so new in this field that I think I cant find any help there, expecially because more than a time I saw bossy reply about people searching "for dummies" help.
Your replies are really a good help to make me figure out which is the picture.
Coming back to the thread, I have no gateway before MailCleaner and if I activate the Reverse DNS function it works very well but I really need that some email that fail the rDNS have not to be rejected. My SMTP check is configured like the image linked here:
I'd like to switch on the rDNS check and make the domain listend in "don't check these hosts" accepted also if the emails fail the rDNS check. I thought this was the function of this box, isn't it?
For the #2 I'll give a look to the forum hoping to find some help.
Thanks