Hey there,
i read many times that 'myhostname' in the postfix configuration should
be the same as the ptr and some say even the same as the mx record.
So i played around with it a little bit and figured, that even though i
ve set the 'myhostname' to mail.greatserver.com, whereas the hostname of
the machine running postifx and the ptr is
just greatserver.com, the smtp banner check on mxtoolbox reports
everything is fine.
I ve read through the smtp banner check description on mxtoolbox.com and
it says:
/
//"//You will get this warning if the name you present yourself as is
not in the same //*domain*//as the hostname we get when we perform a PTR
lookup on your IP Address."/
So i am asking myself, is it really necessary that the HELO of my
postfix server and the ptr are exactly the same?
Excuse me if it sounds like a stupid question but i am new to all of
this and i just wanna do things right from the start and understand it
correctly.
So basically if i wanna set myhostname to mail.greatserver.com i have to
change the ptr to mail.greatserver.com too to comply with the RFCs and
"best practices" or is only the same domain part relevant like mxtoolbox
says?
Thank you for helping me out.
Bye
Dennis
