Building with IPv6 support .......... : yes
[snip]
Error: socket() failed: Protocol not supported Fatal: listen(993) failed: Protocol not supported
try with configure --disable-ipv6 and ssl enabled
Same thing's happening to me:
Install prefix ...................... : /usr/local File offsets ........................ : 64bit I/O loop method ..................... : poll File change notification method ..... : none Building with SSL support ........... : yes (OpenSSL) Building with IPv6 support .......... : no Building with pop3 server ........... : yes Building with GSSAPI support ........ : yes Building with user database modules . : static prefetch passwd passwd-file checkpassword ldap sql (modules) Building with password lookup modules : passwd passwd-file shadow pam checkpassword ldap sql (modules) Building with SQL drivers ............: mysql
# /usr/local/sbin/dovecot Error: socket() failed: Protocol not supported Fatal: listen(993) failed: Protocol not supported