[Dovecot] Dovecot's as server based and mail filters and addressbooks holder?

[Peter Fern]

Sysadmin wrote:

> Actually LDAP isn't so easy set up or manage. Personally I cant use 
> ldap connection in office, as port is closed. And this is lately very 
> common, actually in most government offices only ports 80 and 443 and 
> true proxy server are open from inside to outside.
>

Well then, since you can't use external email from the office, why would 
you care about an external addressbook?  And if the mail server is 
internal, then there's no problem?  Don't really see this as constructive...