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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