Hi,
We are opening a discussion here, because we can't find any information related to this.
Sometimes when we are sending emails to domains like virginmedia.com, we are receiving this message: "said: 421 4.2.0 MXIN618 Temporary SMC Policy Violation detected, retry later".
Does someone know what means?
Best regards
Vince
ISPs are implementing so many protection mechanisms it has become a nightmare to send to multiple destinations. We have constant rejections from Microsoft's family of emails, if there are two or more destinations for an email all the MS destinations reject.
With a combination of ISP wanting out of email and their crazy blocking algorithms,
email is becoming useless for clubs and small businesses.
