Sender field mangled in milter

2020-10-12 Thread Ryan Beethe
Hi, I noticed that the address rewriting that postfix is doing seems to rewriting invalid mailboxes as valid ones. I noticed this while writing an automated test around a milter I have which does a few privacy-alias-friendly things, like allowing you to send messages with a From field that

Re: Mailing lists in the wild

2018-08-24 Thread Ryan Beethe
On Fri, Aug 24, 2018 at 04:36:28PM -0400, Andrew Sullivan wrote: > On Fri, Aug 24, 2018 at 02:10:00PM -0500, Ryan Beethe wrote: > > Also it is my understanding that SPF and DKIM suffer the same > > issues... if the mailing list is configured incorrectly then when I > >

Re: Mailing lists in the wild

2018-08-24 Thread Ryan Beethe
> Looking at your 'conditions', what you're trying to do looks like its > already handled by an existing milter > > https://www.benzedrine.ch/milter-regex.html > > How are your requirements different than what that provides? Indeed, it looks like I could implement the requirements I am using with

Re: Mailing lists in the wild

2018-08-24 Thread Ryan Beethe
On Fri, Aug 24, 2018 at 02:51:08PM -0400, Andrew Sullivan wrote: > This feels like you are reinventing DMARC or maybe DKIM and needing to > invent ARC to solve the problem with mailing lists. Have you looked > at those systems? > > A I had not looked at ARC, but if I am not mistaken... isn't ARC

Mailing lists in the wild

2018-08-24 Thread Ryan Beethe
I am developing a milter application to enforce certain properties of both header From and envelop From fields of emails, both outgoing and incoming to my server. While reading through recent traffic on this list I realized that my current rules were too strict and would break basically all