Relay domains for out going email

A

AlphaOmega

Member
Sep 2, 2020
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Hello,

I tried to set up PMG as SMTP for out going email, I configured a relay domain with domains but when I send an email transaction I get a problem with the error message 'relay access denied'

1694490774485.png

Sep 12 10:52:32 xxx-xxx postfix/smtpd[59485]: connect from unknown[192.168.xxx.xxx]
Sep 12 10:52:32 xxx-xxx postfix/smtpd[59485]: Anonymous TLS connection established from unknown[192.168.xxx.xxx]: TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)
Sep 12 10:52:32 xxx-xxx postfix/smtpd[59485]: NOQUEUE: reject: RCPT from unknown[192.168.xxx.xxx]: 554 5.7.1 <xxx.xxx@yahoo.com>: Relay access denied; from=<xxx@xxx.com> to=<xxx.xxx@yahoo.com> proto=ESMTP helo=<[192.168.xxx.xxx]>
Sep 12 10:52:32 xxx-xxx postfix/smtpd[59485]: lost connection after RCPT from unknown[192.168.xxx.xxx]
Sep 12 10:52:32 xxx-xxx postfix/smtpd[59485]: disconnect from unknown[192.168.xxx.xxx] ehlo=2 starttls=1 mail=1 rcpt=0/1 commands=4/5


Please advise.
 
Dzikri said:
I tried to set up PMG as SMTP for out going email,
Click to expand...
For outgoing mail you need to send to the internal port of PMG (default is 26) - and the sending server needs to be listed as trusted IP/Network

Additionally 'domains' is most likely wrong - Relay Domains are for inbound traffic (from the internet to your local domains - and you need to add your domains and not the string 'domains'

I hope this helps
 
Stoiko Ivanov said:
For outgoing mail you need to send to the internal port of PMG (default is 26) - and the sending server needs to be listed as trusted IP/Network

Additionally 'domains' is most likely wrong - Relay Domains are for inbound traffic (from the internet to your local domains - and you need to add your domains and not the string 'domains'

I hope this helps
Click to expand...

Thanks for your feed back and advice.

Currently i have listed the block IP client in Trusted IP/Network, since i use this PMG host as outgoing SMTP based on your explanation, i changed the External SMTP Port to 26 and the Internal SMTP Port to 25.

1694576994044.png

I have now tried to simulate sending an email and it has successfully worked, is the Ports configuration that I did above in line with its function?
 
Dzikri said:
I have now tried to simulate sending an email and it has successfully worked, is the Ports configuration that I did above in line with its function?
Click to expand...
Yes - just make sure you only list trusted IPs in the Networks section!
 
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