on 2019/8/29 16:50, @lbutlr wrote:
Only if you were very careful monitor your system for the many many corporate
sanders where greylist was the effective equivalent of a blacklist (those that
did not retry in violation of RFCs and this that had many servers and would
resend from different ones).
I tried it, but had far too many banks (refuse to resend at all) and mailers
like google (many servers, never the same one twice within the greylist window)
that I fairly quickly decided it wasn’t tenable.
Some open lists refuse to resend then those messages are discarded.
I once had a mail.ru account which have greylist policy thus open
mailing lists refuse to talk to it.
regards.
wesley