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Connection to storage server failed.

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johnzbesko:
So, my roundcube installation has been working fine for months and two days ago I applied a routine Kubuntu 18.04 update and now roundcube no longer works. When I log in, I get the subject line error message.

Testing my connection to comcast, I try:

$ openssl s_client -connect imap.comcast.net:993 -crlf
140620169363904:error:20087002:BIO routines:BIO_lookup:system lib:../crypto/bio/b_addr.c:693:Temporary failure in name resolution
connect:errno=11

However, testing an alternative (that I discovered trying to debug a previous squirrelmail installation) connects:

$ openssl s_client -connect imap.ge.xfinity.com:993 -crlf           
CONNECTED(00000003)
depth=2 C = GB, ST = Greater Manchester, L = Salford, O = COMODO CA Limited, CN = COMODO RSA Certification Authority
verify return:1
depth=1 C = GB, ST = Greater Manchester, L = Salford, O = COMODO CA Limited, CN = COMODO RSA Organization Validation Secure Server CA
verify return:1
depth=0 C = US, postalCode = 19103, ST = PA, L = Philadelphia, street = 1 Comcast Center, O = Comcast Corporation, OU = NSO, OU = Hosted by Comcast Corporation, OU = Unified Communications, CN = imap.email.comcast.net
verify return:1

Yet, when I change the roundcube config.inc.php to use the xfinity address, roundcube still doesn't work.

I think the Kubuntu upgrade updated some python packages.

Any help is greatly appreciated!

JohnDoh:

--- Quote ---... Temporary failure in name resolution
--- End quote ---
looks like a DNS issue


--- Quote ---...
depth=0 C = US, postalCode = 19103, ST = PA, L = Philadelphia, street = 1 Comcast Center, O = Comcast Corporation, OU = NSO, OU = Hosted by Comcast Corporation, OU = Unified Communications, CN = imap.email.comcast.net
verify return:1

Yet, when I change the roundcube config.inc.php to use the xfinity address, roundcube still doesn't work.

--- End quote ---
This is probably down to certificate verification failure. You connected to host imap.ge.xfinity.com but the cert has CN imap.email.comcast.net. You can disable certificate verification using the `$config['imap_conn_options']` setting. You also need to update the entries in the users table of your roundcube database to the new host or you'll loose all you user settings, address book etc.

johnzbesko:
Well, I tried the suggestion about adding:

$config['imap_conn_options'] = array(
     'ssl' => array(
      'verify_peer' => false,
      'verify_peer_name' => false,
      'allow_self_signed' => true,
     ),
 );

But it still doesn't work. From the error log file:

[17-Apr-2019 16:08:53 -0500]: <sbdb9jt0> IMAP Error: Login failed for johnzbesko from 162.93.80.1. Could not connect to ssl://imap.email.comcast.net:993: php_network_getaddresses: getaddrinfo failed: Temporary failure in name resolution in /var/www/html/roundcube/program/lib/Roundcube/rcube_imap.php on line 196 (POST /roundcube/?_task=login&_action=login)
[17-Apr-2019 18:45:35 America/Chicago] PHP Warning:  stream_socket_client(): php_network_getaddresses: getaddrinfo failed: Temporary failure in name resolution in /var/www/html/roundcube/program/lib/Roundcube/rcube_imap_generic.php on line 959
[17-Apr-2019 18:45:35 America/Chicago] PHP Warning:  stream_socket_client(): unable to connect to ssl://imap.email.comcast.net:993 (php_network_getaddresses: getaddrinfo failed: Temporary failure in name resolution) in /var/www/html/roundcube/program/lib/Roundcube/rcube_imap_generic.php on line 959
[17-Apr-2019 18:45:35 -0500]: <u5r3ok2i> IMAP Error: Login failed for johnzbesko from 127.0.0.1. Could not connect to ssl://imap.email.comcast.net:993: php_network_getaddresses: getaddrinfo failed: Temporary failure in name resolution in /var/www/html/roundcube/program/lib/Roundcube/rcube_imap.php on line 196 (POST /roundcube/?_task=login&_action=login)

Thanks for help.

JohnDoh:

--- Quote ---php_network_getaddresses: getaddrinfo failed: Temporary failure in name resolution
--- End quote ---

you have a problem with your DNS

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