ok - we can debate if it's a bug but it'd not intuitive.
In the following router and transport I am saving a copy of the message
so the learn-bot can learn it as ham.
What happens is that the unseen saved version of the message has the
headers changed - but the message passed on to the next router does NOT
have the headers changed.
# This router whitelists messages stored in Squirrelmail white list
personal_whitelist:
driver = accept
local_part_suffix=-*
local_part_suffix_optional
senders = ${if exists
{/etc/squirrelmail/prefs/$local_part@$domain.whitelist}\
{/etc/squirrelmail/prefs/$local_part@$domain.whitelist}}
domains = +virtual_local_domains
headers_remove = "X-Spam-Flag : X-Spam-Level : X-Spam-Status :
X-Spam-Checker-Version"
headers_add = "X-Whitelisted: $sender_address"
transport = white_learn
unseen
no_verify
# transport
white_learn:
driver = appendfile
allow_symlink
envelope_to_add
file = /tmp/ham
group = mail
mode = 0777
return_path_add
