E-mails from community stopped arriving yesterday or the day before. My mail provider tagged them as spam. I have set my mailbox to store spam aside, so I was able to recover them, and the reason is given in the headers as:
X-Spam-BL: found in dnsbl.sorbs.net (Currently Sending Spam See: http://www.sorbs.net/lookup.shtml?22.214.171.124)
(Stored one message should it be needed for further analysis but I don't attach it here as I don't want to attract genuine spam by publishing my addresses :-) ).