Re: Mitigating From field spoofing (revised)

2016-07-05 Thread Jack beanstallk
Noel Jones megan.vbhcs.org> writes: > This is not something built into postfix. > > As an alternative, use SPF and DKIM to detect forged mail claiming > to be from your own domain. > > -- Noel Jones > > Just to clarify is this something that is not built into postfix with my current use c

Mitigating From field spoofing (revised)

2016-07-04 Thread Jack Beanstallk
[Please ignore my last email as this was sent by mistake before it was finished] Hi, We have an internet facing MX server whereby all users authenticate their outgoing connection to submit emails via port 587. This MX server routes incoming mail for our domain to an internal postfix smtp server w

Mitigating From field spoofing

2016-07-04 Thread Jack Beanstallk
Hi, We have an internet facing MX server whereby all users authenticate their outgoing connection to submit emails via port 587. This MX server routes incoming mail for our domain to an internal postfix smtp server which then delivers mail to local imap servers. The internal postfix smtp server u