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zhangchi2009's avatar
zhangchi2009
Copper Contributor
Jul 31, 2020

exchange 2019 ipblocklistprovider block e-mail even not in blocklist

hello guys ,

 

i'm facing a prblem on exchange 2019 CU3 .

 

i set the ipblocklistprovider as zen.spamhaus.org to prevent spam e-mails , but some e-mails from our costomer were blocked  .  i have checked the agent log ,and i can see the log which e-mails were blocked by zen.spamhaus.org .

 

1. i use test-ipblocklistprovider command to test the ipaddress of our customer , but the DNS lookup result from zen.spamhaus.org is "false"

 

2.  i try to add this ip address of our customer into ipallowlistentry , but no use , the e-mail still blocked .

 

does anyone can help on this ?

 

thank you very much .

 

 

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