Bug#879007: cyrus-imapd does not accept new connections

[Christophe Boyanique]

I confirm that bug which makes cyrus imapd non functional on Debian 9. 
Everything seems ok after applying the provided patch.


It seems important to backport that patch to stable.


Debian Release: 9.3
   APT prefers stable-updates
   APT policy: (500, 'stable-updates'), (500, 'stable')
Architecture: amd64 (x86_64)

Kernel: Linux 4.9.0-6-amd64 (SMP w/2 CPU cores)
Locale: LANG=fr_FR.UTF-8, LC_CTYPE=fr_FR.UTF-8 (charmap=UTF-8), 
LANGUAGE=fr_FR.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)


Christophe.
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