Proxmox Mail Gateway as a relay mail server

[jmjosebest]

Hello, Proxmox Mail Gateway can be configured as a relay server in order to filter spam-out?
Thanks!

 

[tom]

Yes, start reading here.

https://www.proxmox.com/en/downloads/category/documentation-pmg

 

[jmjosebest]

Thanks Tom,

I just ordered and installed, I've been added the sender IP on Mail Proxy > Networks

root@pmg:~# cat /etc/pmg/mynetworks
185.47.128.0/22 #
188.213.4.0/22 #
5.134.112.0/21 #
root@pmg:~#

But I'm getting error Relay access denied

What is wrong?

Thanks

LOG: MAIN
  cwd=/usr/local/cpanel/whostmgr/docroot 4 args: /usr/sbin/exim -v -M 1eh97F-00027l-6s
delivering 1eh97F-00027l-6s
LOG: MAIN
  Sender identification U=ginernet D=ginernet.com S=jm@ginernet.com
Connecting to pmg.ginernet.com [188.213.5.77]:25 from 5.134.116.16 ... connected
  SMTP<< 220 pmg.ginernet.com ESMTP Proxmox
  SMTP>> EHLO ginernet.com
  SMTP<< 250-pmg.ginernet.com
         250-PIPELINING
         250-SIZE 10485760
         250-VRFY
         250-ETRN
         250-STARTTLS
         250-ENHANCEDSTATUSCODES
         250-8BITMIME
         250 SMTPUTF8
  SMTP>> STARTTLS
  SMTP<< 220 2.0.0 Ready to start TLS
LOG: MAIN
  [188.213.5.77] SSL verify error: depth=0 error=self signed certificate cert=/OU=Proxmox Mail Gateway/O=ginernet.com/CN=*.ginernet.com
  SMTP>> EHLO ginernet.com
  SMTP<< 250-pmg.ginernet.com
         250-PIPELINING
         250-SIZE 10485760
         250-VRFY
         250-ETRN
         250-ENHANCEDSTATUSCODES
         250-8BITMIME
         250 SMTPUTF8
  SMTP>> MAIL FROM:<jm@ginernet.com> SIZE=1833
  SMTP>> RCPT TO:<ginernet@outlook.com>
  SMTP>> DATA
  SMTP<< 250 2.1.0 Ok
  SMTP<< 454 4.7.1 <ginernet@outlook.com>: Relay access denied
  SMTP<< 554 5.5.1 Error: no valid recipients
  SMTP>> QUIT
  SMTP(close)>>
LOG: MAIN
  == ginernet@outlook.com R=smarthost_dkim T=remote_smtp_smart_dkim defer (-44) H=pmg.ginernet.com [188.213.5.77]: SMTP error from remote mail server after RCPT TO:<ginernet@outlook.com>: 454 4.7.1 <ginernet@outlook.com>: Relay access denied

 

[tom]

Did you add your internal IP on:

"Configuration/Mail Proxy/Networks: Trusted Networks"

 

[dietmar]

Also, the default port for outgoing mail (trusted) is 26. If you want to relay mails, you need toö connect to that port.

 

[jmjosebest]

On my source server, I've changed the port to 26, and I get a Connection refused error:

LOG: MAIN
  cwd=/usr/local/cpanel/whostmgr/docroot 4 args: /usr/sbin/exim -v -M 1eh97F-00027l-6s
delivering 1eh97F-00027l-6s
LOG: MAIN
  Sender identification U=ginernet D=ginernet.com S=jm@ginernet.com
Connecting to pmg.ginernet.com [188.213.5.77]:26 from 5.134.116.16 ... failed: Connection refused
LOG: MAIN
  H=pmg.ginernet.com [188.213.5.77] Connection refused
LOG: MAIN
  == ginernet@outlook.com R=smarthost_dkim T=remote_smtp_smart_dkim defer (111): Connection refused

 

[dietmar]

maybe a firewall in between?

 

[jmjosebest]

maybe a firewall in between?

Yes, my mistake.
And all this relayed emails are filtered by the antispam?

I've tried to forward a spam email and has not been blocked.
Also, in Statics > Spam Score all counts are zero, including the Score 0 value.

Maybe relayed emails are not scanned?

 

[jmjosebest]

Ignore me, I'm looking to play with mail filters.
Thanks!!!

 

[cpzengel]

Did you add your internal IP on:

"Configuration/Mail Proxy/Networks: Trusted Networks"

Is there a way to add dynamic hostnames instead of CIDR?

 

[VoIP-Ninja]

Is there a way to add dynamic hostnames instead of CIDR?

what the hell are dynamic hostnames ?
(Christian, was zum Teufel sind dynamische Hostnamen ) ? ;-)

 

[cpzengel]

Forget about the Question, I got SASL running

 

[troy.roberts]

Yes, my mistake.
And all this relayed emails are filtered by the antispam?

I've tried to forward a spam email and has not been blocked.
Also, in Statics > Spam Score all counts are zero, including the Score 0 value.

Maybe relayed emails are not scanned?

I have the same problem where relayed mails are not filtered by the antispam and proxmox is consdering them as all outbound mail.

How did you resolve this?

 

[Stoiko Ivanov]

I have the same problem where relayed mails are not filtered by the antispam and proxmox is consdering them as all outbound mail.

a) next time please open a new thread than replying to one that has not seen any activity in a long time ..

b) If PMG sees the mails as outbound then they arrive on the internal port (GUI->Configuration->Mail Proxy)
https://pmg.proxmox.com/pmg-docs/pmg-admin-guide.html#chapter_deployment

Make sure you have the correct ports configured and that the FIrewall and NAT rules in your network are correct

I hope this helps!