Description of problem:

After configuring the Satellite to send emails via SMTP, the test email fails with "Backtrace for 'Unable to send email' error (EOFError): end of file reached"

Version-Release number of selected component (if applicable):

Satellite 6.7.5-1

How reproducible:

I was not able to reproduce, as I do not have an SMTP relay server with similar settings as the failing environment.

Steps to Reproduce:
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Actual results:

The test email is failing with the traceback that will be uploaded privately.

Expected results:

Additional info:

We are able to reproduce the same error using the foreman-rake console.