On one of my multi-site (sub-folder) I can't succeed to send even test emails from within CiviCRM even though I use a Drupal Webform and it sends confirmation emails from this particular multisite with no difficulty.
I wanted to send an email campaign with civimail and I'm doing this with a third party provider :-(
I have configured and checked all settings (civimail settings, smtp settings...) and compared with the default site and I can't find where to improve.
Any idea? Guillaume