false sitecore.smtp.e.sparkpost.com 587 sitecore true 1000 3 https://sparkpost.cloud.sitecore.net 401 403 500 502 503 https://sitecore.api.e.sparkpost.com/ https://apps.sitecore.net 10 00:00:10.000 00:00:30.000 00:10:00.000 3 nexus b5fc350d-cd68-406e-b7a4-2dcf5adfcc4d 429 500 503 429 500 503 bounce policy_rejection generation_failure generation_rejection spam_complaint exm.master bounce@spe.sitecoremail.com