Re: Trusting postfix client certs for relaying

2021-04-18 Thread Dan Mahoney
> On Apr 18, 2021, at 10:30 PM, Viktor Dukhovni > wrote: > > On Sun, Apr 18, 2021 at 08:49:34PM -0400, Demi Marie Obenour wrote: > Each system is issued a certificate for its own domain. Perhaps a better example would be email Subject Alternative Names. >>> >>> That's not an exam

Re: Trusting postfix client certs for relaying

2021-04-18 Thread Viktor Dukhovni
On Sun, Apr 18, 2021 at 08:49:34PM -0400, Demi Marie Obenour wrote: > >> Each system is issued a certificate for its own domain. Perhaps a > >> better example would be email Subject Alternative Names. > > > > That's not an example (use-case), it is a certificate field. What > > is the use-case.

Re: Trusting postfix client certs for relaying

2021-04-18 Thread Demi Marie Obenour
On 4/18/21 8:04 PM, Viktor Dukhovni wrote: > On Sun, Apr 18, 2021 at 07:59:07PM -0400, Demi Marie Obenour wrote: > Would it be possible to support trusting based on subject alt name? I would like a machine with a certificate for a.example.com to send mail from a.example.com domains.

Re: Trusting postfix client certs for relaying

2021-04-18 Thread Viktor Dukhovni
On Sun, Apr 18, 2021 at 07:59:07PM -0400, Demi Marie Obenour wrote: > >> Would it be possible to support trusting based on subject alt name? > >> I would like a machine with a certificate for a.example.com to send > >> mail from a.example.com domains. This rather mixes end-to-end properties (the

Re: Trusting postfix client certs for relaying

2021-04-18 Thread Demi Marie Obenour
On 4/18/21 2:39 PM, Wietse Venema wrote: > Demi Marie Obenour: It seems that There are knobs that let you list *individual certs* for allowing trusted relaying, but not *individual ca's*. Is there any way around this? >>> >>> Yes: handle that traffic with a dedicated smtpd inst

Re: Trusting postfix client certs for relaying

2021-04-18 Thread Dan Mahoney
Sent from my iPad > On Apr 17, 2021, at 14:16, Wietse Venema wrote: > Dan Mahoney (Gushi): >> All, >> >> The dayjob has a number of machines out in the wild that need to be able >> to send mail (mostly from cron jobs) home to the mothership. Not all have >> controllable reverse DNS. It's

Re: Trusting postfix client certs for relaying

2021-04-18 Thread Wietse Venema
Demi Marie Obenour: > >> It seems that There are knobs that let you list *individual certs* for > >> allowing trusted relaying, but not *individual ca's*. > >> > >> Is there any way around this? > > > > Yes: handle that traffic with a dedicated smtpd instance that only > > trusts your internal ro

Re: Trusting postfix client certs for relaying

2021-04-18 Thread Demi Marie Obenour
On 4/17/21 5:15 PM, Wietse Venema wrote: > Dan Mahoney (Gushi): >> All, >> >> The dayjob has a number of machines out in the wild that need to be able >> to send mail (mostly from cron jobs) home to the mothership. Not all have >> controllable reverse DNS. It's an issue with donated colo and tr

Re: Trusting postfix client certs for relaying

2021-04-17 Thread Wietse Venema
Dan Mahoney (Gushi): > All, > > The dayjob has a number of machines out in the wild that need to be able > to send mail (mostly from cron jobs) home to the mothership. Not all have > controllable reverse DNS. It's an issue with donated colo and transit. > Doing a bunch of tunnels would work b

Re: Trusting postfix client certs for relaying

2021-04-17 Thread Jaroslaw Rafa
Dnia 17.04.2021 o godz. 11:56:54 Dan Mahoney (Gushi) pisze: > > The dayjob has a number of machines out in the wild that need to be > able to send mail (mostly from cron jobs) home to the mothership. > Not all have controllable reverse DNS. It's an issue with donated > colo and transit. Doing a b