I can receive mail but outgoing mail is deferred by smtp-amavis with the message:

"tls is required, but ws not offered by host []"

I have enabled tls in main.cf and I put:

-o smtp_tls_security_level=none

into /opt/zimbra/postfix/conf/master.cf.in (which I believe should have fixed the problem)

and then did a zmcontrol restart

I am at a loss as to why this 'fix' didn't work.

Can anyone please help? Thanks.

= =
PS My system is Amazon Linux (CENTOS 6.3); trying to send via SES