Filter rules can be limited to a period: the rule dialog takes a start
and an end on the user's clock, the rule list shows whether a rule is
planned, active or expired, and the script tests the moment of
delivery with RFC 5260 currentdate in UTC. A rule is never written
without its period.
The vacation card becomes an out of office page: the period on top,
then the automatic reply and forwarding, each with its own switch.
Forwarding runs with or without the auto-reply, within the period,
never for spam, and keeps a copy here or not. Against the server's
redirect limit it counts as a rule ahead of all others, one that stops
the message unless it keeps a copy. The auto-reply can go to
internal or external senders only, told apart by the envelope sender
against the account's own domains. Both run from the filters script
that includes Stalwart's vacation script, which is put back in charge
when the server's own script takes over.
A script that uses any of this says metadata version 2, which older
builds leave alone instead of writing it back without these fields.
The rule editor added up the forwards of all enabled rules against the
server's redirect limit, which applies per message. Rules run in order,
and a rule that stops ends the script for its messages, so a rule that
forwards and stops locked forwarding in every other rule, although no
message can reach both.
Count the most forwards one message can collect instead, and warn above
the rule list when the order, a switch or a drag lets one message
collect more than the limit.
Builds on the stop fix: without it, "Stop processing" after "Delete
silently" or "Reject" writes no stop.
The rule editor had no way to say "every message that arrives"; the
workaround was a condition like "From contains @", which only works if
you know it. "All messages" is now a condition of its own, at the end of
the field list. It takes no comparator and no value, writes Sieve's
`true` test, and combines with other conditions as any condition does.
The rule list shows it on its own. A rule with it is never applied to
the messages already in a folder: it would act on all of them.