Citeren i...@interpost.biz:

Hello,

I am still unable to view a mail in imp after recent horde, imp and lz4 upgrades to latest (horde 5 groupware webmail edition) - log below

ON line 19 and line 75, below there are some very slow timeouts. Do you think that the problem could be with the cache being enabled for imap? and the recent lz4 upgrade?

Could be https://bugs.php.net/bug.php?id=41631 that is hitting you.

Since you're using Dovecot and connect to it through localhost, switching off TLS (which is the default) for the connection works around this. Dovecot allows PLAIN authentication through localhost without encryption by default (from http://wiki2.dovecot.org/SSL/DovecotConfiguration):

"Note that plaintext authentication is always allowed (and SSL not required) for connections from localhost, as they're assumed to be secure anyway. This applies to all connections where the local and the remote IP addresses are equal. Also IP ranges specified by login_trusted_networks setting are assumed to be secure."

Depending on the settings in your imp/config/backends.local.php, adding one of the following two lines would do this:

$servers['imap']['secure'] = false;

    or

$servers['advanced']['secure'] = false;

Unless required by your IMAP server using TLS on connections to localhost is just a waste of effort. If someone is able to sniff traffic on connections over the loopback interface, you have bigger problems to worry about.

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