add config switch for read-only headername-cache
update documentation of purging and deletion switches of dbmail-util
fix backport regression
close a significant leak from disconnecting clients
support default-route in usermask
extend support for default-route in usermask
fix return value during usermap resolving
POP3: add loop protection to bailout sequence
skip headernames integritity check when header_cache_readonly is true
IMAP: fix segfault due to out-of-range octet specification
version 3.1.13