We got some complaints from our users and detect that emails from our server are being blocked because of "Temporary SMC Policy Violation detected".
These emails are all about restoring access to accounts on our service or other security emails. We do not send spam.
It's not clear what "SMC Policy Violation" means, but any assistance in getting this block removed would be greatly appreciated.
Thanks in advance.
Permanent failure during DATAEND phase to [USERNAME@virginmedia.com]: 421 OK 4.2.0 MXIN618 Temporary SMC Policy Violation detected, retry later ;id=i3geocF5kxa1ei3geoqQ5l;sid=i3geocF5kxa1e;mta=mx7.tb;dt=2022-10-11T03:04:01+02:00;ipsrc=22.214.171.124;