Hello. First I must say that I have configured on server everything what was needed and my server is correctly working. I have UPS, WF, Apps and everything works. The only problem is that if I create workflow (SharePoint designer or Visual studio 2012) which
can send emails, the workflow ends with canceled and error is http 400. Hmm... Ok I have tested if my server can send emails and yes the server can send emails because emails from alerts or SPUtility I will receive without any problem. I have configured on
server SMTP for anonymous access. I have done everything what can be done but still without any luck. And also yes of course that I am not testing this as a SharePoint administrator account.
So I have SharePoint 2013 server my workflows are running but when I use in workflow send email activity the workflow cancel with error http 400. On server is configured correctly UPS, SMTP, Apps, Workflow manager and other services only problem is send email
activity in workflow. Again emails are working on the server(alerts, SPUtility and so on)only emails in WF are not working....Hmm....
I have tested everything what was described on internet but still same problem. WF canceled with http 400 error.
Thank you for your help.