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Updated FAQ
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FAQ.md
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FAQ.md
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@ -3725,15 +3725,15 @@ This feature requires an internet connection.
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A spam block list is basically a list of domain names which have been used to send spam or to spread malware.
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A spam block list is checked by resolving the domain name of an email address into an IP address
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A spam block list is checked by resolving the server name from the last *Received* header into an IP address
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and looking up the IP address with a DNS request:
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```
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example@gmail.com ->
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gmail.com
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gmail.com ->
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172.217.168.229
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DNS lookup 229.168.217.172.zen.spamhaus.org ->
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Received:
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... from smtp.gmail.com ...
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smtp.gmail.com ->
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142.250.27.108
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DNS lookup 108.27.250.142.zen.spamhaus.org ->
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127.0.0.2: spam
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NXDOMAIN: not spam
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```
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