Helo strings problem - Ip banned

[romand700]

Hello,
I formatted my server and installed CENTOS 7 and PLESK 12. I have problems with cbl.abuseat.org. My ip enters in blacklist. I sent email to the support of abuseat.org and abuseat reply:

Please fix your HELO strings.

I check the my configuration and I think is correct:
- Reverse lookup is ok
- Hostname is ok (server.domain.tld)

But I have the file in /etc/sysconfig/network empty. There is only written:
# Created by anaconda

Also, is correct the my etc/hosts file?
127.0.0.1 server.domain.tld server localhost4 localhost4.localdomain4
:: 1 server.domain.tld server localhost6 localhost6.localdomain6

Any idea?

Regards,

 

[IgorG]

Check that you have not blacklisted IP address in output of

# grep smtp_bind_address /etc/postfix/master.cf

 

[romand700]

Check that you have not blacklisted IP address in output of

# grep smtp_bind_address /etc/postfix/master.cf

For every domain I see:
plesk-domain.tld-00.000.00.000- unix - n n - - smtp -o smtp_bind_address=00.000.00.000 -o smtp_bind_address6= -o smtp_address_preference=ipv4 -o smtp_helo_name=domain.tld

Where 00.000.00.000 is my ip.. It's correct?

regards,

 

[IgorG]

Is it banned IP?

 

[romand700]

Is it banned IP?

Yes IgorG.. This is the ip that is banned from abuseat.. I delist the ip but every day abuseat ban again.

I delete even in etc/host file localhost.localdomain

regards,

 

[IgorG]

Just change this IP to other or kill spammer on your server.

 

[romand700]

Just change this IP to other or kill spammer on your server.

I formatted the server and change the IP. But also the new ip is finished in blacklist.. I do not believe that in the server exists spammers. Most domains use google apps.

How can I fix it?

regards,

 

[IgorG]

I think that first of all you need to figure out why your IPs always puts in blacklist.

 

[romand700]

I think that first of all you need to figure out why your IPs always puts in blacklist.

I also do not understand. I write an email to the support of cbl.abuseat.org and reply with:

Please fix your HELO strings.

But this seems ok. You have other ideas where I can check?

Regards,

 

[romand700]

Sorry.. I see in a forum thread that the helo line is controlled by the smtpd_banner parameter in main.cf of postfix.

In my etc/postfix/main.cf the smtpd_banner is commented:

#smtpd_banner = $myhostname ESMTP $mail_name

Can I enable this line? It could bee an idea?

Regards,

 

[IgorG]

Yes, you can try at least.

 

[romand700]

Yes, you can try at least.

Ok.. Thanks IgorG..

regards,

 

[romand700]

Yes, you can try at least.

I try but no resolve. I delete "smtpd_banner = $myhostname ESMTP $mail_name" but now all the mailbox in the servers do not receive mail..

Any idea?

regards,