How to Fix Postfix' 'Relay Access Denied'?
How to Fix Postfix' 'Relay Access Denied'?
Apr 8 13:12:20 ip-xxxxxxpostfix/smtpd[21163]: NOQUEUE: reject: RCPT from xxx-ap-south-1.compute.internal[xxxxx]: 454 4.7.1 <email@gmail.com>: Relay access denied; from=<email@gmail.com> to=<email@gmail.com> proto=ESMTP helo=<server-6f8d85756-xp6hp>
Solution:
mynetworks
This will permit hosts by IP address that match IP ranges specified in $mynetworks. In the main.cf you need to change the network ranges which can send e-mail through Postfix. If its mentioned as 127.0.0.1, it will only relay emails generated by the server itself.1. To Open e-mail from all network , just add "0.0.0.0/0" in "/etc/postfix/main.cf". If you want restrict it to certain network please mention it explicitly.
mynetworks = 0.0.0.0/0, 127.0.0.0/8
2. Reload the postfix.systemctl reload postfix
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