New issue by kzkin on void-packages repository

https://github.com/void-linux/void-packages/issues/50728

Description:
### Is this a new report?

Yes

### System Info

Void 5.10.215_1 x86_64 GenuineIntel uptodate hold rrrmmnFFFFFFFF

### Package(s) Affected

claws-mail-4.2.0_1

### Does a report exist for this bug with the project's home (upstream) and/or another distro?

https://lists.claws-mail.org/pipermail/users/2018-January/020561.html

### Expected behaviour

Connecting to imap server by TLS

### Actual behaviour

When I try to open any IMAP folder, the claws mail returns the following error:

    * Account '[blabla]': Connecting to IMAP server: imap.[blabla].com:993...
    *** SSL/TLS handshake failed

### Steps to reproduce

Switch to use TLS in account settings