CMS Made Simple Forums

I'm not receiving a filled in form on the sendto mailadres. It worked a couple of days but for an unknown reason not anymore. I've read
viewtopic.php?f=7&t=71069, but that is not solving the problem for me.
The setting are mailer (because the others won't work) and the mailadres is the same as known by the hosting.
CMS 2.1.6 and Formbuilder 08.1.6 are used.
Can anyone explain why suddenly sending forms is not working because I'm not receiving on send to mail adres?
Help would be very appreciated.

E-mail problems are a little harder to investigate and very often the problem resides outside the web-application (though it might be a combination of settings in- and outside the application).

Are you able to send a test-message from CMSMailer or Global Settings - Mail Settings?

IIRC errors received by the mail-procedure are kind of suppressed. Not sure about current versions of CMSMS.

I'm not receiving any test mail with CMSMailer or Global Settings - Mail Settings. When I installed form builder and set the settings, everything worked well.