1 May
2020
1 May
'20
8:52 a.m.
On 2020-04-30 02:43, Mark Andrews wrote:
And it is still on going. Just got 4 of these.
Mark
Technical proposal how to solve that. At 1st of month send monthly reminder manually, to each subscriber, but encode recipient address in Reply-To: a bit special way. First, you need catch-all alias on special domain. Then, you calculate reply-to, for example if destination recipient: hash("secret-keyword" + user@domain.com)=aabbccdd So, it becomes: Reply-To: aabbccdd@monthly.nanog.org Then just check all bounces received to *@monthly.nanog.org, and unsubscribe relevant users.