Cannot send to MS 365, IP blocked by SPAMHAUS Cannot send to MS 365, IP...

Topic: Cannot send to MS 365, IP blocked by SPAMHAUS

Post Cannot send to MS 365, IP blocked by SPAMHAUS
by victortrujillo on Wednesday, April 29, 2026

I am trying to send an email to MS 365 user. It is being blocked because the dynu IP is listed in SPAMHAUS. I cannot send email to any user in my MS 365 email domain from my other email domain that passes through Dynu. The IP address is 162.216.242.35.

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Wednesday, April 29, 2026 5:53 PM
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