[imp] IMAP login not working in IMP 6.0.2

[Webmaster]

Hi,

I am running ubuntu 10.04.

I discovered the following problem with the latest IMP 6.0.2 version:

I can successfully login to the horde portal 5.0.2 with an IMAP 
authentication.
But I get the following error:
“User is not authorized for imp”

The login to the imp will fail due to the same backend settings in horde 
config and imp config.

The horde log states the following:
2012-12-03T12:57:35+00:00 ERR: HORDE [imp] Anmeldung fehlgeschlagen. [pid 
8345 on line 390 of "/var/www/horde4/imp/lib/Imap.php"]
2012-12-03T12:57:35+00:00 ERR: HORDE [horde] FAILED LOGIN for webmaster at xxxx 
[xxx.xxx.xxx.xxx] to Horde [pid 8345 on line 192 of 
"/var/www/horde4/login.php"]
2012-12-03T12:57:35+00:00 WARN: HORDE [horde] PHP ERROR: openssl_decrypt() 
expects at most 4 parameters, 5 given [pid 8345 on line 45 of 
"/usr/share/php/Horde/Crypt/Blowfish/Openssl.php"]

I have installed the following PHP version:
PHP Version 5.3.2-1ubuntu4.18
which is the latest PHP version released in the channel.

The php page (http://de2.php.net/manual/en/function.openssl-decrypt.php) 
states the following:
string openssl_decrypt ( string $data , string $method , string $password [, 
bool $raw_input = false [, string $iv = "" ]] )
5.3.3 The iv parameter was added.

The pear info of imp states that the required php version is as follows:
Required dependencies PHP version 5.3.0

There seems to be a mismatch.


Could this be the problem that I am not able to connect to IMAP or am I 
configuring something wrong?

I want to be sure that this is the problem before I consider to upgrade to 
12.04 or an newer php version on my own.

Best Regards,
Thorsten