robsoncunha / ses-postfix-relay

Docker Image with Amazon SES Postfix Relay

SES Postfix Relay

Set credentials in docker-compose.yml then

docker build . -t ses-postfix-relay 
docker-compose up -d 

helo_access

In addition to MYNETWORKS, you will need to specify the hosts from which you accept HELO messages in helo_access. You can use POSIX Regular Expressions (PCRE) here if you wish.

See access(5) and regex_table(5) for details on the HOST NAME patterns allowed here.

Testing

You can attach to the container and send a test message. The final line must contain a period with no other content.

sendmail -f [email protected] [email protected]
From: MyDomain Notification
Subject: Amazon SES Test                
This message was sent using Amazon SES.                
.

Troubleshooting

Feb 17 17:56:02 ip-10-150-241-58 postfix/smtpd[978]: NOQUEUE: reject: RCPT from localhost[127.0.0.1]: 451 4.3.0 <ip-10-150-241-58.ec2.internal>: Temporary lookup failure; from=<[email protected]> to=<[email protected]> proto=ESMTP helo=<ip-10-150-241-58.ec2.internal>

Some things to check:

• is the RCPT from address in MYNETWORKS
• is the from= address permissible in your SES relay
• is the to= address permissible in your SES relay
• does the hostname in helo= match an entry in helo_access

Related Links

• https://github.com/tmclnk/ses-postfix-relay
• https://hub.docker.com/repository/docker/tmclnk/ses-postfix-relay
• https://docs.aws.amazon.com/ses/latest/DeveloperGuide/postfix.html
• https://docs.aws.amazon.com/ses/latest/DeveloperGuide/smtp-credentials.html