550 Bad HELO - Host impersonating domain name

Ik don't think so...

Try a 'nslookup -query=AAAA server2.whitelabel-reseller.nl' to make sure you have an AAAA record for server2.whitelabel-reseller.nl and check if you have rdns on that ipv6 record.
Or disable ipv6 and sent using ipv4.

From over here it doesn't look like you have a AAAA record with your ipv6 server address and you don't have the rdns for ipv6 set correctly.

You are correct the records didnt exist i added now, or isp doesnt deliver reverse dns for ipv6 yet so cant change that part.
Issue is still there gona try adding interface= with the ipv4 ip
 
adding interface = to remote_smtp section of exim doesnt fix either, there is something that i find strange when looking to the full source of an email.
The ip address shown
Received: from [2001:15c8:6::2:2eb] (helo=server2.whitelabel-reseller.nl)
by server.123hostingservice.nl with esmtps (TLSv1:DHE-RSA-AES256-SHA:256)
(Exim 4.80)
(envelope-from <[email protected]>)
id 1WMMM1-0001xl-OB
for [email protected]; Sat, 08 Mar 2014 19:52:13 +0100
Is not the ipv6 ip that is linked to the shared server ipv4 address, this ipv6 ip is linked to another ipv4 ip that is owned to 1 user for ssl purpose so why is exim sending true this ipv6 ip even tho i have set the interface = option in the remote_smtp section aka section 61 in spamblocker exim conf
 
Check both your sending and receiving servers, do you have different "primary_hostname" values in /etc/exim.conf? If it is commented out on both systems, do both have different values returned for the command "hostname"? If so, have you tried restarting exim on both systems.

The message is coming from this entry in exim.conf:
Code:
      condition = ${if or { \
                            {match{$sender_helo_name}{$smtp_active_hostname}} \
                            {eq{$sender_helo_name}{[$interface_address]}} \
                          } {true}{false} }
so either the HELO coming from the sender matches the receiving hostname (primary_hostname or real hostname) or the HELO name matches your exims IP address.
 
after checking the /etc/hosts files on both servers found that the sender had server2. and server3. hostnames set and founded on the recieving server in /etc/ a file called HOSTNAME witch contained the hostname of the sending server no idea how it came there tho.

After changing restarting exim and network on both servers problem still occurs.

In the exim.conf on the sending server uncommented the primary_hostname and set it to the servers hostname no change.
Changed the exim.conf remote_smtp, added interface = <; 0:0:0:0 ; ::1 (used the reall ips) this resulted that exim now sends mail true the correct ipv6 ip (checked that true reading email sources)
Received: from [2001:15c8:6::2:2fc] (helo=server2.whitelabel-reseller.nl)
so after fisicly setting the hostname and ip's it should look ok.

But saidly enough the recieving server still bounces
 
Finally found the issue and soleved it.
In /etc/virtual/ there where still directory's from all the old hostnames this server had in the past (it was changed a few times server is running a few years allready).
After removing it was fine.

Thanks all for the help and sugestions
 
Finally found the issue and soleved it.
In /etc/virtual/ there where still directory's from all the old hostnames this server had in the past (it was changed a few times server is running a few years allready).
After removing it was fine.

Thanks all for the help and sugestions

Thank your for after 4 years it helped me out. Thats why forums are important help sites for everyone:)
 
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