expand docs for adding a disclaimer

The part with the matching encodings is not straight-forward to debug, so at
least document it.

Signed-off-by: Stoiko Ivanov <s.ivanov@proxmox.com>

diff --git a/pmg-mail-filter.adoc b/pmg-mail-filter.adoc
index 6fc6b4e27492ca9b070558c252dcafd4c1ea83de..e071f83c11508b2ef3eeb329cbc969052ac41054 100644 (file)
--- a/pmg-mail-filter.adoc
+++ b/pmg-mail-filter.adoc
@@ -162,6 +162,10 @@ Disclaimer
 
 Add a Disclaimer.
 
+The disclaimer can contain html markup and will be added to the first found
+text/html and text/plain part of an email. It only gets added if the disclaimer
+text can be encoded in the mail's character encoding.
+
 
 [[pmg_mailfilter_who]]
 'Who' - objects