The payroll system our company uses is hosted in AWS, and it also seems that a large chunk of AWS has been email blacklisted (a few ASN's). Most payslip emails are bouncing (depending on the destination domain), so I had to explain what was happening, first to the Payroll person, then to the CFO, neither of whom are very technical. Also had to point out that apart from reporting it to the payroll system company (who will take it up with AWS) there's not a whole lot we can do.
Cef, Cefiar, Stuart, "hey you"! Been "on-line" since the late 1980's (pre-internet). Ran Cafe BBS between '88-'96. Electronics/computers/tinkering/gin/cats.
Consider this a friendly, local pub. Make yourself at home, bring your friends, have a good time! Meet new people, have a laugh, enjoy the ambience, and the Oxford commas.