Although you can use your own SMTP server, please be aware that at least 2 emails are sent from the myzahara.net domain. This means you should white-list the sending of all emails through your smtp server that use this domain.
The reject email will come from: email@example.com
The Excel report will come from: firstname.lastname@example.org
You can continue to use our own SMTP server or set your own but please don’t log a support ticket if emails don’t get sent. It is down to you to make sure you create the right settings in your email server / account / SPF to allow emails to route correctly.