Support Information – Problems with the delivery of e-mails to 1&1 (web.de and GMX)
During the day, there was a disruption in email traffic to servers of 1&1 (web.de and GMX) due to a problem in the TLS or DANE area. We suspect it was related to 1&1’s TLS certificate expiring tomorrow.
To enable delivery again, simply restart the gateway role(s) to clear the corresponding cache.
IMPORTANT: NoSpamProxy Cloud customers are NOT affected by this!