Re: TCP maps security risks & mitigations; Trualias alias mapping

2019-10-21 Thread m3047
Wietse, thanks. On Mon, 21 Oct 2019, Wietse Venema wrote: Fred Morris: [...] From an opsec perspective I wouldn't recommend running a service which enumerates accounts and email aliases for all the world to see, encrypted or not. However the risks and mitigations of doing so on loopback or in a

Re: reject mail if dns and rdns differ

2019-11-11 Thread m3047
I (mostly) concur with what Bill Cole says (maybe I'd quibble with the "2nd clause" part). Here's a shopworn blade which is in my list of things to rewrite in Python one day: http://athena.m3047.net/pub/perl/mail-processing/realmailer.pl.txt You call it from e.g. procmail, or in other wo