Timeline for How did I get this email without a "To" field?

Current License: CC BY-SA 4.0

12 events

when toggle format	what		by	license	comment
Feb 11 at 22:44	history	edited	thomasrutter	CC BY-SA 4.0	added 3 characters in body
Dec 4, 2022 at 23:45	history	edited	thomasrutter	CC BY-SA 4.0	added 304 characters in body
Apr 27, 2021 at 21:51	history	edited	thomasrutter	CC BY-SA 4.0	added 61 characters in body
Jan 21, 2018 at 22:34	history	edited	thomasrutter	CC BY-SA 3.0	added 2 characters in body
Jan 19, 2018 at 15:52	comment	added	mattdm		Probably worth noting that when you say "newer versions of the protocol", that means "newer than 1995".
Jan 19, 2018 at 15:37	comment	added	Johannes Kuhn		@TobySpeight This is only true if there is only one `RCPT-TO`.
Jan 18, 2018 at 11:32	comment	added	Toby Speight		Perhaps worth mentioning that some MTAs will include a `for` clause in their `Received:` headers, showing the envelope `RCPT TO` on that hop. I haven't checked, but I expect that this is done only when there's a single recipient (for privacy); there don't seem to be any such `for` clauses in the question's headers.
Jan 18, 2018 at 7:51	comment	added	Nelson		@HopefullyHelpful it's not baffling. It is extremely difficult to change such an old standard and not outright break almost everything that uses it. SMTP made assumptions about users being scientists. The end users were the security. The internet was not designed at all as a consumer service. Not even close.
Jan 18, 2018 at 4:58	comment	added	HopefullyHelpful		It's still baffling that after all theses years noone bothered to implement a more secure standard
Jan 17, 2018 at 23:41	history	edited	thomasrutter	CC BY-SA 3.0	added 198 characters in body
Jan 17, 2018 at 4:53	history	edited	thomasrutter	CC BY-SA 3.0	added 1235 characters in body
Jan 17, 2018 at 4:41	history	answered	thomasrutter	CC BY-SA 3.0