Resolved Postfix and Plesk 12, "Send from domain IP", SMTP test from mxtoolbox.com

[King555]

I use Plesk 12 under Debian 7 x64 and Postfix as my mail server. I set the "Send from domain IP" option. According to the mail headers, this option works. But the SMTP test on the site "mxtoolbox.com" says "SMTP Reverse DNS Mismatch" / "Warning - Reverse DNS does not match SMTP Banner".

My question is: Can I ignore this error message in my case?

As I said, when my server sends mails, the correct IP seems to be used (or domain name, respectively). mxtoolbox.com only sees the domain name when sending a mail to my server (and then there is always the server's hostname as the SMTP banner).

 

[IgorG]

First of all make sure that IP address of domain is pointing to the hostname of this domain:

# dig +short domain.com
xxx.xxx.xxx.xxx

# host xxx.xxx.xxx.xxx
domain.com

Also check this article - http://kb.odin.com/en/122406
It may be useful.

 

[King555]

# dig +short domain.com
xxx.xxx.xxx.xxx

# host xxx.xxx.xxx.xxx
domain.com

This displays me the correct results. All domains are configured correctly.

Also check this article - http://kb.odin.com/en/122406

I ran the SQL command and there are no inconsistencies, all entries are correct.

My question is more a general question than a real problem.

 

[femotvaff]

from your hosting company control panel you can set rDNS on "IP" --> reverse DNS menù.

 

[IhnoH]

I use now Plesk 12.0.18 Update #29 under Debian 7.7 x64 and Postfix as my mail server, too. I set the "Send from domain IP and Domainname in Banner" option. The SMTP test on the site "mxtoolbox.com" says "SMTP Reverse DNS Mismatch" / "Warning - Reverse DNS does not match SMTP Banner".
See for Plesk 11 : http://talk.plesk.com/threads/smtp-banner-multiple-ip-on-plesk-11-5-x.298618/ Post 11
Its the same issue !!!
But the config file from Plesk 12 is new...
A telnet mydomain.tld 25 and 587 list the Main-Server-IP and this is wrong !!!
The Plesk DB is correct !
/etc/postfix/master.cf : ( doesn´t work... )
plesk-mydomain.tld-xxx.my.domain.ip- unix - n n - - smtp -o smtp_bind_address=xxx.my.domain.ip -o smtp_bind_address6= -o smtp_address_preference=ipv4 -o smtp_helo_name=mydomain.tld

Parallels please fix ist as soon as possible....

 

[King555]

I asked the people from mxtoolbox.com and they said that I can ignore this error mesage in my case.

What you can check: Send an email to yourself via a domain which is not the main domain/IP and check the mail header afterwards. If the sending domain has been added to the header, everything is fine.

 

[femotvaff]

from your hosting company control panel you can set rDNS, search for "IP" settings --> reverse DNS menù.
(rDNS=reverse DNS)

If you do not fix this the banner will be always wrong.