efa-project.org

I am new to all this CentOS / postfix stuff, but did glean enough off other posts to find the line:

smtpd_client_restrictions = permit_sasl_authenticated, reject_rbl_client zen.spamhaus.org, reject_unknown_reverse_client_hostname

in /etc/postfix/main.cf

removing reject_unknown_reverse_client ...

We use EFA primarily as a outgoing smarthost to make sure our email server and some other hosted solutions don't get compromised and start sending out spam. It has caught a few compromised accounts for us.

Since the 3.0.2.2 upgrade earlier today, it's refusing mail from the email server with a 4.7 ...