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!