Problems receiving e-mails are occurring today.
The reason, apparently, is due to the failed renewal of spamcop.net domain and this is causing the worldwide rejection of mail delivering of any type for SMTP servers using this RBL.
Although Cisco, the owner of spamcop, has fixed the domains in the late evening of 31 January, at the moment we continue to experience email disruption problems, with email wrongly blocked from some mail servers.
We recommend that you disable the use of this list until the problem is resolved.
The GARR CERT is available for any clarification https://cert.garr.it/en/about/contacts