Set up https://aws.amazon.com/ses/ with a verified email so that it can send as that address and only to that address.
For your sanity keep track of the AWS region you are in! I am using Oregon aka us-west-2.
I tested both ssmtp and msmtp !
email@example.com FromLineOverride=NO mailhub=email-smtp.us-west-2.amazonaws.com:587 AuthUser=AKIAINSHZHYMQYHXD4FQ AuthPass=secret UseSTARTTLS=yes UseTLS=YES TLS_CA_File=/etc/pki/tls/certs/ca-bundle.crt AuthMethod=LOGIN Debug=YES
defaults tls on tls_starttls on tls_trust_file /etc/ssl/certs/ca-bundle.crt account default host email-smtp.us-west-2.amazonaws.com port 587 auth on user AKIAINSHZHYMQYHXD4FQ password secret from firstname.lastname@example.org
Making /usr/sbin/sendmail to send to your verified address only
When you get:
[root@rojak ssmtp]# send-mail: 554 Transaction failed: Missing final '@domain' ssmtp: 554 Message rejected: Email address is not verified. send-mail: server message: 554 Transaction failed: Missing final '@domain' send-mail: could not send mail (account default from /etc/msmtprc)
Either request for a “Limit Increase: SES Sending Limits” so that your account
moves out of the sandbox, so you no longer need to verify recipient
addresses… or follow the steps below to make
sendmail to send mail to your
only verified email:
If you use msmtp:
email@example.com # your AWS SES verified email cat | /usr/bin/msmtp -i -- $v
I recommend msmtp since the revaliases is just:
# cat /etc/msmtp-aliases default: firstname.lastname@example.org
ssmtp has nicer logging. If you use ssmtp, change the binary:
cat | /usr/sbin/ssmtp -i -- $v
Also ssmtp weighs in at 5k SLOC whilst msmtp is 18k