Signed-off-by: Mira Limbeck <m.limbeck@proxmox.com>
Reviewed-By: Stoiko Ivanov <s.ivanov@proxmox.com>
SMTP Whitelist::
Exclude senders from SMTP blocking. To prevent all SMTP checks
-(Greylisting, Receiver Verification, SPF and RBL) and accept all
+(Greylisting, Receiver Verification, SPF and DNSBL) and accept all
e-mails for the analysis in the filter rule system, you can add the
following to this list: Domains (Sender/Receiver), Mail address
(Sender/Receiver), Regular Expression (Sender/Receiver), IP address
endif::manvolnum[]
All SMTP checks are disabled for those entries (e.g. Greylisting,
-SPF, RBL, ...)
+SPF, DNSBL, ...)
+
+DNSBL checks are done by `postscreen` which works on IP addresses and networks.
+This means it can only make use of the `IP Address` and `IP Network` entries.
NOTE: If you use a backup MX server (e.g. your ISP offers this service
for you) you should always add those servers here.
+NOTE: To disable DNSBL checks entirely, remove any `DNSBL Sites` entries in
+xref:pmgconfig_mailproxy_options[Mail Proxy Options].
[[pmgconfig_spamdetector]]
Spam Detector Configuration