@gunchleoc @audiodude @anantagd can I also suggest if someone kindly provides a reply with an Alt Text from you and you think it's accurate then please edit your original post and paste it in.
Otherwise readers mat not look beyond the Alt-free post and see the added Alt Text in the replies.

@jwildeboer no doubt they are mostly spam however as a small family email server I'm not seeing any emails from either TLD. so for me not worth screening out.

At the moment I'm rejecting about 16% (737) and including 4.7.1 try again later of the 3861 message received over a 4 week period. Only about 2% (25) ended up in my users spam folders.
What is more annoying is the 9396 smtpd warnings (authentication failures or DNS fails through fail2ban blocks). Seems lots of spammers are trying to guess my user passwords and get a relay.