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554 Blocked error

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I didn't receive the notifications and got error message (554 Blocked - see https://ipcheck.proofpoint.com/?ip=#IP#) from the delivery error log.

I tried the website and it says not blocked by ipcheck. proofpoint.

Does anyone have an idea how to fix this?

Many thanks,

Bob

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Jonathon_wodnickiAccepted solution

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Hi,

Were you checking the external IP of your MTA(s)?

Thanks,

-Jon

Jonathon_wodnickiAccepted solution

New Participant

Hi,

Were you checking the external IP of your MTA(s)?

Thanks,

-Jon

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bobc17055580Author

New Participant

Nope. I went into the delivery audit log and this is the error message I got in the delivery log.

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