Problem
How is the priority of Whitelisting vs Blacklisting handled for VadeSecure?
Solution
The more specific entry wins. In case of an blacklist entry for a domain and a whitelist entry for a specific address address of this domain, everything will be blocked except the specific whitelist address.
Example:
- Domain is whitelisted
- Specific address is blacklisted
A match against the blacklist entry wins in this case. If the same entry exists in black and whitelist, the whitelist entry wins.
Regarding other checks, the whitelist is applied on the RCPT TO step. All protocolar rules applied before are not subject of blacklist/whitelist. The protocolar rules concerned are as follows:
Protocolar Rules
HELO : check if the HELO is a FQDN
MAIL FROM : check if the domain has a A or MX record
MAIL FROM : SPF check
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