Problem Description
- When sending emails you receive a bounce indicating: 554 5.7.1 Service unavailable; Client host blocked using bl.spamcop.net
Problem Resolution
As of Jan 31, 2021, the Spamcop project has come to an end, letting their domain expire, and is now returning a 'failed' result for all lookups. To fix this, remove the bl.spamcop.net server from your list of realtime block lists (RBLs).
With Plesk servers this is done by completing these steps:
- Login to Plesk as and admin capable user
- Go to Tools & Settings > Mail Server Settings
- Scroll to the bottom and look for the "DNS zones for DNSBL service" field. Ensure it does not have bl.spamcop.net in it
- Save settings
Problem solved! We have applied this change to all shared servers and VPS with Hands-On Management as of January 31, 2021.