Peter N. M. Hansteenhm. this thing seems to be popping up again and again https://news.ycombinator.com/item?id=47636937 #greytrapping #email #runyourownmailserver #spam #spamd #greylisting #antispam
It might be worth mentioning that one commenter on the hackernews item feels that this https://nxdomain.no/~peter/they_do_not_understand_mail_at_all.html makes the point better and is an easier read.
For those with incrementally broader interests in networking and related trickery, https://nxdomain.no/~peter/its_real_its_here.html may be good news (and according to some, the referenced tome can be a good read).
ClickyMcTicker@pitrh Google and Microsoft blocking valid email from small senders happens all the time. It is indeed a delusion if they think their spam filter works well. If they were serious about spam, they would block each other and then crack down on their own users. They produce a massive amount of spam each.
@ClickyMcTicker In my personal experience, at least during the last handful of years, MSFT has been easier to inbox at and easier to deal with in general.
Reasoned, expletive-free messages seem to get human-originated responses there.
Then again, my smallish sample could be less than representative of the whole.