[courier-announce] New releases of Courier packages

[Sam V. <mr...@co...>]

Download: http://www.courier-mta.org/download.html

New "stable" release of courier, courier-imap, sqwebmail, maildrop, courier- 
authlib, and cone packages.

Consolidated changes since the last stable release.

- 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.

- maildrop: standalone maildrop now requires libidn, rather than it being an  
optional dependency, with maildrop tools now supporting parsing of 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.

- 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.

- courier: fixes a backscatter logging bug that sometimes prevents "courier  
clear" from working correctly.

- courier-authlib: fix a leak of socket file descriptors to authpipe's child  
processes.