NethServer Version: 7.3.1611 (Final)
A little background is I’m moving from a Xmail/Dovecot Ubuntu 16.04 based system as Xmail appears very dead. I’m in the process of bringing up the system. I know I need to transfer the certs still and while Thunderbird >45 is fine my users with Outlook 2016 refuse to connect which I think is because Microsoft is now rejecting part of TLS but that us another issue for another post.
I use mxtoolbox.com for my server check and it seems fine but for reverse dns. My ISP has the PTR with the main domain of xxxx.com. My host name is mail.xxxx.com and was on the other machine. In XMail I had to change HELO_DOMAIN to xxxx.com and set ROOT_DOMAIN to my ISP domain or it wouldn’t work. My certs are domain tied to xxxx.com.
Okay so I read the manual and see a command for postfix custom helo and use it but when I test with telnet the helo response is still the host name of mail.xxxx.com. It was pointed out to me I forgot the “-” at the end of the su command. I also found the postfix main.cf file and checked that the change took place. It did. I restarted the server form Nethserver service screen but so far it is still reporting the host name 250 mail.xxxx.com
Getting the ISP to change the PTR is a drwan out affair like they think I want a few pints of their blood or something so if I can get the reverse DNS to pass then I believe gmail, ymail, hormail etc should start being received again. Again, for another post about the reverse DNS but don’t see why that is any issue as all was good before; just the anti relay issues with the improper helo repsonse is what I’m after at present please.
I appreciate any tips even if they are along the lines of I need to change PTR, hostname, DNS or whatever.