Hi Markus,
I have the same problem with https://mxtoolbox.com:
“SMTP Banner Check Reverse DNS does not match SMTP Banner”
I googled a lot and finally been lucky, I found this thread.
I am testing DNS records on my main NethServer directly connected to the internet. I have a few domains on that server.
- Main domain: toto.org.
- Testing domain: toto.info.
- …
I am using toto.info to make sure i don’t ruin my main domain. When everything will be working properly, I will do the same configuration on toto.org as I did on toto.info.
# postconf | grep myhostname
lmtp_lhlo_name = $myhostname
local_transport = local:$myhostname
milter_macro_daemon_name = $myhostname
mydestination = $myhostname, localhost.$mydomain, localhost
myhostname = server-name.toto.org
myorigin = $myhostname
smtpd_banner = $myhostname ESMTP $mail_name
smtpd_proxy_ehlo = $myhostname
The above looks OK but my problem is that I am testing with toto.info.
- I created a mail server for toto.info, DNS entries, alias, etc. in the NS Manager.
- All the DNS records at the registrar look OK.
QUESTION:
Is it possible to have more than one SMTP banner and associate each one of them to the right domain on the server?
Thank you in advance for your judicious advice,
Michel-André