Reverse DNS Problem (with EXIM additional IP)

musti19

Well-Known Member
Jan 20, 2013
111
1
18
cPanel Access Level
Root Administrator
Hello,
i have configured a additional IP for exim, but i have problems,
that some provider decline my emails with:

SMTP error from remote mail server after RCPT TO:<***EMAIL***>:
host DESTIONATION MAIL SERVER: 550 inconsistent or no DNS PTR record for EXIM IP (see RFC 1912 2.1)

What i do ?

A reverse DNS is already configured for the main + exim IP in datacenter
with same hostname.
notice: I dont use the DNS System of cpanel.

1.
in exim.conf
changed in:

Code:
remote_smtp:
  driver = smtp
  interface = EXIM IP
  #interface = ${if exists {/etc/mailips}.....................
  #helo_data = ${if exists {/etc/mailhelo}......................
2. /etc/mailips:
with
Code:
*: EXIM IP
3. /etc/mailhelo
with
Code:
*: HOSTNAME
4. /etc/mail_reverse_dns
Code:
MAINIP: MYHOSTNAME
EXIM IP: MYHOSTNAME
Protected all files, then restart the exim mail server

if i check the IPs on:
Reverse IP Lookup - MxToolbox

no Problem.

if check the IPs on:
Hostkarma Blacklist Removal Form

the main ip have no problem.
The exim IP:
ERROR - Reverse DNS Lookup Failed.
IP [EXIM-IP] does not match [MAIN-IP] - Click here for troubleshoot your Reverse DNS - (Strongly Recommended)

I spend lot of hours without a solution.
Have anyone an idea, where the problem can be?
 

cPanelMichael

Administrator
Staff member
Apr 11, 2011
47,913
2,201
363
Hello :)

Please note that manually editing the Exim configuration file is not required to change the IP address Exim uses to send email. Instead, you can follow the instructions at:

Changing the Sending IP for Outbound Email in Exim

Does the issue continue when following these instructions? If so, you may want to open a support ticket so we can take a closer look at the actual IP address. You can post the ticket number here so we can update this thread with the outcome.

Thank you.