Hello,
I have a strange behavior regarding IP Block List Providers.
We have two Exchange 2007 Servers of same Organization; one is inEurope (configured for @domain.com) and the other is in China (configured for @domain.cn). I setup two IP Block List Providers:
- SpamHAUS - zen.spamhaus.org
- SORBS - dnsbl.sorbs.net (Currently disabled)
China's users don't receive e-mails from any sender since last two days; running PowerShell commandletGet-AgentLog I get: "550 5.7.1 Recipient not authorized, your IP has been found on a block list".
If I use IP Address Lookup Tool from SpamHAUS
site, it doesn't appear to be listed on their database.
PowerShell commandlet Test-IPBlockListProvider launched on bothEurope and China Exchange Servers gives different results for same tested address:
Test-IPBlockListProvider "SpamHAUS" -IPAddress <IPAddress>
Europe Exchange Server Result
- Provider: SpamHAUS
- ProviderResult: {}
- Matched: False
China Exchange Server Result
- Provider: SpamHAUS
- ProviderResult: {220.250.64.23}
- Matched: True
Have you never get this strange behavior ?
Bye,
Luca
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