Courier development build 20180801 released

Sam Varshavchik <[email protected]> Wed, 01 Aug 2018 21:54:14 -0400
Newsgroups	gmane.mail.imap.courier.sqwebmail,gmane.mail.imap.courier.general,gmane.mail.imap.courier.server,gmane.mail.maildrop
Message-ID	<[email protected]>
Download: http://www.courier-mta.org/download.html

Updated development builds of courier, sqwebmail, maildrop, and cone  
packages. Also the courier-imap package too, but no significant code changes  
there.

Mostly implements the remaining parts of SMTP UTF8 support in Courier.

maildrop: standalone maildrop now requires libidn like other packages,  
rather than it being an optional dependency, with maildrop tools now  
supporting parsing of unicode-formatted bounce messages.

sqwebmail and cone also now display unicode-formatted bounce messages.

couriermlm's default mailing list configuration settings block distribution  
of Unicode E-mail to mailing lists, due to the unlikely ability of most  
mailing list recipients to receive Unicode E-mail, at this time; which would  
result in their mailing list messages bouncing. It can be optionally  
enabled. Also, it's now possible to validate mailing list traffic when  
receiving messages via SMTP, rejecting not just Unicode mailing list E-mail,  
via SMTP, but also mail from non-subscribers; rather than accepting and  
bouncing it.

Other changes since the last stable release:

- reformime: -rU option.

- reformime: fix crash due to an invalid -s option

- maildirmake: the -q option creates a new maildir if it does not exist.

- courier/courier-imap/cone: couriertls: GnuTLS: remove usage of deprecated
OpenPGP API. Adjust error logging to include the peer's IP address, where
available.

- maildrop: new :H pattern option matches only the main message headers, does
not match headers in the message's attachments, if any.

- courier: Change the format of the Received: header to comply with RFC 5322.

- all: updated packages with RPM build scripts for Fedora 28. Miscellaneous
fixes to fix diagnostics generated by aggressive warning compilation options
enabled in Fedora 28. Fix cone crashes on Fedora 28 caused by the additional
hardened build options. None of them were actual bugs.

- courier: fix makesmtpaccess to correctly handle IPv6 CIDR notation (if
Net::CIDR is installed)

- courier: remove hardcoded socket names from the sample mail filtering
modules, instead using their runtime name, as per the documented API.

- courier, courier-imap: change startup scripts so that encrypted connections
will run couriertls after dropping root privileges.

- all: adds support for Unicode E-mail messages, in UTF-8. Courier-IMAP now
uses Unicode (UTF8) for names of maildir folders. All existing mailboxes
with non-ASCII names require manual conversion. See the maildirmake manual
page for step-by-step instructions that need to be carried out by hand. The
instructions are referenced in each package's INSTALL, as well as
https://www.courier-mta.org/maildirmake.html (the "Converting pre-unicode
format maildirs" section).

POP3 servers don't use folders, but there might be a brief delay the first
tiem a POP3 client connects to a POP3 server mailbox with a large number of
messages, while the POP3 server rebuilds its persistent cache and flags UTF8
messages. The IMAP server checks each message's format on the fly, when the
IMAP client requests it.

- sqwebmail, cone: updated to use the same folder naming scheme as courier-
imap, and the same upgrade instructions apply. Cone updated to enable UTF8
mode after connecting to IMAP, POP3, and SMTP servers that implement it.

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