Ruby-talk mail server blacklisted in spamcop


Has anyone else noticed this? Anyone looking into it?

Mar 3 21:19:53 gateway postfix/smtpd[78501]: NOQUEUE: reject: RCPT
from[]: 554 Service
unavailable; Client host [] blocked using; Blocked - see; from=removed_email_address@domain.invalid
to=removed_email_address@domain.invalid proto=ESMTP helo=<>

Per the diagnostic, more info here:

This has caused several interruptions in the past week, leading me to
believe it may have been listed, auto-unlisted, and re-listed at
least once.