Hello,

I have a Sparkpost account and would like to try MailPoet via Sparkpost.

I have setup Sparkpost as recommended (http://docs.mailpoet.com/article/50-sparkpost-api), but the connection-test has failed with the following error-notification:

“Unconfigured Sending Domain
Error Sending Message SMTP works with MailPoet to mac.bay@me.com | Notice: Undefined offset: 0 in /srv/www/wpe.macbay.net/public_html/wp-content/plugins/wysija-newsletters/classes/WJ_Sparkpost.php on line 26
You specified an SMTP password but you don’t require an authentication, you might want to turn the SMTP authentication ON.
Error Sending Message SMTP works with MailPoet to mac.bay@me.com | Notice: Undefined offset: 0 in /srv/www/wpe.macbay.net/public_html/wp-content/plugins/wysija-newsletters/classes/WJ_Sparkpost.php on line 26″

but I have correctly setup and authentificated my domain in Sparkpost. I have also checked with my other SMTP-accounts, which were working correctly with all my other mail-clients (Apple Mail, iOS, Thunderbird etc.).

Since I’m no developer I wonder if anybody could help me troubleshooting and fixing this.

Thank you and kind regards,
Sascha