Sendmail Horde Port 587

[admins]

Hi all

I wan't that all outgoing mails should go authentificated on port 587.
So, horde send its mail per sendmail. Could I config sendmail on port 587?

I can config in horde mail to smtp auth (Ther I put in the server ip and port)
May he try not to auth with email and password to this ip on port 587...

Thanks
admins

[till]

Horde connects on localhost only trough a pipe to sendmail and not a port, so why shall horde send on port 587?