On 10/8/2018 6:17 AM, Ignacio Garcia wrote: > Hi there! > > I've been reading the documentacion as well as googling around but > I've been unable to figure this out: > > I have several hosting servers. I'd like all web sites hosted in > those servers not to be able to send outbound mail without > authenticating first. Same thing for shell users. What I'm really > trying to achieve is that everybody (local accounts and php scripts > running under www-data) will be forced to use the submission service > (smtp-auth, tls activated) for all outbound emails, keeping > non-authenticated connections just for internal emails (usually from > services to the system administrator) > > Any guru willing to point me into the right direction? TIA!! > > Ignacio
http://www.postfix.org/postconf.5.html#authorized_submit_users Probably something like # main.cf authorized_submit_users = root, cron (add any other service owners that need to send mail) and also remove "permit_mynetworks" from smtpd_recipient_restrictions and from smtpd_relay_restrictions. -- Noel Jones
