CiviCRM Community Forums (archive)

Just in case anyone else runs into this...

CiviEvent had been working ok for registrations previously but now I was getting errors on the "Thank You for Registering" page.  The registration was recorded but the confirmation email wasn't going out.  All the mail settings were/are definitely correct - it all works ok elsewhere in CiviCRM using sendmail or SMTP.

Errors when using sendmail: 'sendmail returned error code 1'
Errors when using SMTP: "Failed to add recipient: @localhost"

I finally figured out what was causing the problem in my case - we are using a custom profile to request additional details from the user when they register for the event and we had Contact->Email (Primary) as one of the fields in the profile.  Once this field was removed the event registration and confirmation email works as usual

I was unable to reproduce the problem in the sandbox but I think I figured out what was happening in my installation:

We are using Drupal 6, CiviCRM 2.2b2 and want to allow anonymous users to sign up for events

I tested out the registration using an existing Drupal account and the Email field still in the profile - registration and confirmation email went through successfully

Registering for the event while not logged in triggers the error - I think that the Email field for the anonymous user overrides the email field in the form and when CiviEvent goes to send the email it used the empty value instead of the value in the form.