Postfix, Edited sasl_passwd and now the relay fails authentication

So I'm running Postfix 3.1.0 on a work server. It's relaying emails to AWS SES and I just updated the access key. I removed the previous value in /etc/postfix/sasl_passwd and then ran postmap hash:/etc/postfix/sasl_passwd and email was failing authentication. Then I systemctl restart postfix and still no auth success. The only information I can find is regarding the postmap command and that should JUST WORK.

Like I said I logged onto a working system.. created a new access key in IAM. Put that new into into /etc/postfix/sasl_passwd and thats the only change I've made. What did I do wrong?

Solution 1:

The question is that the work - postfix server have any related relay before server. Like, Ironport or proxy for example. If yes, you need firewall accesses or update postfix with sample below.

Also dont forget to use postconf command to give postfix the latest config update DESCRIPTION By default, the postconf(1) command displays the values of main.cf con‐ figuration parameters, and warns about possible mis-typed parameter names (Postfix 2.9 and later). It can also change main.cf configura‐ tion parameter values, or display other configuration information about the Postfix mail system.

#DOMAIN.any mail server config

#relayhost = [smtp.relaydomain.ext]:587 #smtp_use_tls=yes #smtp_sasl_auth_enable = yes #smtp_sasl_password_maps = hash:/etc/postfix/relay_passwords #smtp_sasl_security_options =