Attention: History Reviewed Subscribers – Are you getting my Emails? Emails blocked?

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I was preparing to send out another email now with updates and while checking I saw that my sending email address seemed to be blocked – completely blocked. As if I can’t send any emails at all.

Can any of you please let me know when last you got an email from me?

It seems to me the control and blocking of emails is now a new nightmare. I had 3 other email addresses of mine blocked … but now one which I thought was “safe” is also blocked.

I was sending out through a South Africa email provider. The actual error message in part reads:

Transaction failed. The server response was: 5.7.1 <...>: Sender address rejected: Hotmail TOS – Telkom SAIX Ref:xxxx Blacklisted for Unsolicited mails

Thanks,
Jan