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

[Arjen de Korte]

Citeren info at 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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