Appreciate if someone could let me know what is happening here please.
Sent an email to a contact of mine and received back the following error (I've ***'ed the email address for privacy reasons).
Quote:
<c***@s****.com>: host mx1.spamwall.co.uk[82.221.110.2] said: 550 A URL in this email (fastmailusercontent . com) is listed on https://spamrl.com/. Please resolve and retry (in reply to end of DATA command)
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The MX record for s****.com is mx1.spamwall.co.uk. It looks like fastmailusercontent.com is being blacklisted. Am I correct?
How can I resolve this? Or is it down to Fastmail?
cheers
E