moderated Re: Member keeps being unsubscribed, and re-joins with settings he did not set #misc


 

On Tue, Feb 23, 2021 at 12:40 PM, Andy wrote:
I don't know -- but he did say they bounce the first message, and after the
resend, they pass it through.
They may be using "greylisting" - https://en.wikipedia.org/wiki/Greylisting_(email) - which is where an email server sends a temporary error response for any unrecognized sender. Proper mailers will retry after waiting a few minutes, but the theory is that spammers don't bother and just continue on with the next address on their list. That's not really a bounce, and Groups.io wouldn't record it as such, but he might not know the difference.

JohnF

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