having the same issue.
… rspamd is retrying every few seconds.
This started around 14h ago.
perhaps a certificate error (with the R3 lets encrypt cert?):
depth=2 O = Digital Signature Trust Co., CN = DST Root CA X3 verify return:1
depth=1 C = US, O = Let’s Encrypt, CN = R3 verify return:1
depth=0 CN = maps.rspamd.com verify return:1
notBefore=Dec 6 19:39:24 2020 GMT
notAfter=Mar 6 19:39:24 2021 GMT
to not being blocked by maps.rspamd.com at some time, I blocked outbound traffic to maps.rspamd.com.