Dovecot error on system w/o IPv6

I’m trying to use dovecot 2.4 on a Leap 16.0 system that has no IPv6 enabled.
When I start dovecot I get this error:

Oct 29 21:30:52 eagle-new dovecot: master: Error: socket() failed: Address family not supported by protocol
Oct 29 21:30:52 eagle-new dovecot: master: Error: service(imap-login): listen(::, 993) failed: Address family not supported by protocol

which I assume results from the fact that there is no IPv6.
How can I get dovecot to run on a plain IPv4 system?

There are alot of dovecot turorials available. Did you try one of these:

Thanks!
listen = *
did it!