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Dear all, if you had problems signing up to https://codeberg.org and do not receive activation emails: we received logs that Cloudmark CSI blocks codeberg MX (possibly because recent publicity via @conservancy led to a spike in new user activations detected as anomaly?)
To bypass, please remove
Cloudmark CSI from RBL lists from your SMTP server config.

(FWIW we have seen this repeatedly in the past and our MX has been repeatedly blocked and unblocked for this particular player in the past.)