I have gone through all of the steps in the How To guide and things are starting to work. But, I do have some errors that I am trying to chase down. When I try to send an email from inside Horde, I get the following error:
There was an error sending your message: Failed to add recipient:firstname.lastname@example.org [SMTP: Invalid response code received from server (code: 421, response: Unexpected failure, please try later)]
Any thoughts on what is causing this?
Last edited by jricker; 26th April 2010 at 20:43.