554 Blocked error

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bobc17055580
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bobc17055580
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16-12-2019

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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wodnicki
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17-12-2019

Hi,

 

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

 

Thanks,

-Jon

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