Re: Reliably identify email forwarded from inside to outside

On Wed, 2 May 2018, Wietse Venema wrote: > > What would be the best way to identify email which is forwarded to > > external addresses by .forward, procmail or sieve rules? > > > > We have control over the mail gateways which handle all incoming-outgoing > > traffic, but no real access to the i

Re: Reliably identify email forwarded from inside to outside

Jozsef Kadlecsik: > Hi, > > What would be the best way to identify email which is forwarded to > external addresses by .forward, procmail or sieve rules? > > We have control over the mail gateways which handle all incoming-outgoing > traffic, but no real access to the internal servers where the

Re: Reliably identify email forwarded from inside to outside

Jozsef Kadlecsik wrote: Hi, What would be the best way to identify email which is forwarded to external addresses by .forward, procmail or sieve rules? As you know the maildomains you are accepting from external, just tag any mail from internal to external originating from diffent Envelope-F

Reliably identify email forwarded from inside to outside

Hi, What would be the best way to identify email which is forwarded to external addresses by .forward, procmail or sieve rules? We have control over the mail gateways which handle all incoming-outgoing traffic, but no real access to the internal servers where the forward rules may be entered.