So, ... I'm looking for recommendations.
The basic context:
using /etc/aliases (or equivalent) to simply and directly forward/alias email out onto The Internet at large, is in general a bad idea (particularly in the days of spam, and anti-spam, etc., among other factors).
Our existing old hosting on DreamHost.com uses a fair bit of that. 8-O Need to migrate that functionality off of DreamHost.com. I'm looking for a way to make that migration that at least partially fixes the issues with such overly simplistic aliases. Notably such "aliased"/forwarded email ought be sent out with appropriate Sender: or similar header(s) (Resent-From: ?) and envelope FROM showing (re)origination from domain of the forwarding host (@balug.org or subdomain thereof). Ideally, a relatively simple near-drop-in replacement that could go into /etc/alises, that would, rather than do overly simple (and problematic) aliases such as: some-alias@balug.org: bob@example.com jane@example.com ... might implement something more like: some-alias@balug.org: "|resend bob@example.com jane@example.com" Also, for these purposes, do not want the complexity of mail lists, e.g. don't need or want subscribe/unsubscribe, archives, etc. At present @balug.org has at least 28 distinct aliases - certainly don't want to manage or have to deal with 28+ additional email lists.
The target infrastructure is: Debian oldstable Debian GNU/Linux 8.9 (jessie) x86_64 MTA: exim4 (will get upgraded to stable at some point, but for the short to medium-term future or so, it's oldstable, and need to implement solution on oldstable).
Thanks in advance regarding recommendations/pointers. :-)