Differing IMAP/Roundcube identification capabilities

[Johannes Graumann]

Hi,

When a user account is defined in kolab3 (debian install) with addresses
beyond the main one (e.g. main address <FirstName>.<LastName>@<Domain> and
secondary address <FirstName>@<Domain>), roundcube allows to log on using
the secondary address, while IMAP access is only possible when identifying
using the primary address.

As humans (me at least) are creatures of habit this can be quite confusing
and hard to track down.

Is the IMAP behavior tunable somewhere?

Thank you for any input.

Sincerely, Joh