I currently have Postfix set up on a Centos 6 server, as a simple forwarding service.
Currently in /etc/postfix/main.cf I have set the following:
smtpd_client_restrictions = permit_mynetworks,reject_unknown_client,permit smtpd_recipient_restrictions = permit_mynetworks,permit_auth_destination,permit_sasl_authenticated,reject_unauth_destination
#For virtual domains virtual_alias_domains = hash:/etc/postfix/mydomains virtual_alias_maps = hash:/etc/postfix/virtual
In /etc/postfix/mydomains I have listed domains that it will accept mail for, and in /etc/postfix/virtual I list the addresses that are configured, and what addresses they forward to.
What I would like to do...
I would like postfix to continue to act as it currently does for mails coming in on port 25.
However, I would like to also set up mail relaying for authenticated users through port 587, with TLS authentication, so I can set up GMail to send email from my own domains through my server.
I've found some tutorials on setting up relaying, but every time I attempt it, it breaks the mail forwarding on port 25.
My last attempt involved the following changes to /etc/postfix/main.cf:
relayhost = [smtp.mydomain.com]:587 smtp_sasl_auth_enable = yes smtp_sasl_password_maps = hash:/etc/postfix/smtp_auth smtp_sasl_security_options = noanonymous
I only have a small number of users, so I'm happy with a simple username/password list in /etc/postfix/smtp_auth (for now at least).
Can anyone give me some pointers on setting this up, please?
Thanks for your help!