courier-imap fails

From	tony@vanderhoff.org
Newsgroups	linux.debian.user
Subject	courier-imap fails
Date	2016-11-15 18:10 +0100
Message-ID	<sDPp7-7LU-21@gated-at.bofh.it> (permalink)
Organization	linux.* mail to news gateway

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I've just upgraded my VPS from Wheezy to Jessie.
Most things work fine, but my mail service has died.

The only clue is in /var/log/mail.info:
imapd-ssl: couriertls: accept: error:14094417:SSL
routines:SSL3_READ_BYTES:sslv3 alert illegal parameter

It turns out that this was reported in bug #787579, which I think should
have been resolved by now. Googling suggests a work-around: DH_BITS=2048
mkdhparams, but this seems to have little effect. I'm not sure what format
a PEM file should take, but my dhparams.pem is only 201 bytes, which seems
a bit small.

Anyway, can anyone please suggest any remedy, please.

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courier-imap fails tony@vanderhoff.org - 2016-11-15 18:10 +0100
  Re: courier-imap fails Markus Schönhaber <debian-user@list-post.mks-mail.de> - 2016-11-15 19:00 +0100
    Re: courier-imap fails tony@vanderhoff.org - 2016-11-15 19:20 +0100

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