mbsync -VD zimbra-backup
Error, can't verify certificate: unable to get local issuer certificate (20)
*** WARNING *** There is no way to verify this certificate. It is
possible that a hostile attacker has replaced the
server certificate. Continue at your own risk!
Accept this certificate anyway? [no]: y
*** Fine, but don't say I didn't warn you!
* OK ulsbc3cb2.molino.intra Zimbra IMAP4rev1 server ready
>>> 1 CAPABILITY
* CAPABILITY IMAP4rev1 AUTH=PLAIN ACL BINARY CATENATE CHILDREN CONDSTORE ENABLE ESEARCH ESORT I1
8NLEVEL=1 ID IDLE LIST-EXTENDED LIST-STATUS LITERAL+ LOGIN-REFERRALS MULTIAPPEND NAMESPACE QRESY
NC QUOTA RIGHTS=ektx SASL-IR SEARCHRES SORT THREAD=ORDEREDSUBJECT UIDPLUS UNSELECT WITHIN XLIST
1 OK CAPABILITY completed
>>> 2 LOGIN <user> <pass>
2 OK [CAPABILITY IMAP4rev1 ACL BINARY CATENATE CHILDREN CONDSTORE ENABLE ESEARCH ESORT I18NLEVEL
=1 ID IDLE LIST-EXTENDED LIST-STATUS LITERAL+ LOGIN-REFERRALS MULTIAPPEND NAMESPACE QRESYNC QUOT
A RIGHTS=ektx SASL-IR SEARCHRES SORT THREAD=ORDEREDSUBJECT UIDPLUS UNSELECT WITHIN XLIST] LOGIN
completed
Error: store 'zimbra' does not support in-box sync state
>>> 3 LOGOUT
* BYE ulsbc3cb2.molino.intra Zimbra IMAP4rev1 server closing connection
3 OK LOGOUT completed
Error, can't verify certificate: unable to get local issuer certificate (20)
*** WARNING *** There is no way to verify this certificate. It is
possible that a hostile attacker has replaced the
server certificate. Continue at your own risk!
Accept this certificate anyway? [no]: y
*** Fine, but don't say I didn't warn you!
* OK ulsbc3cb2.molino.intra Zimbra IMAP4rev1 server ready
>>> 1 CAPABILITY
* BYE ulsbc3cb2.molino.intra Zimbra IMAP4rev1 server closing connection
SSL_read:6:unhandled SSL error