[alternativeSenderAddress]
This defines an alternate email address to be used in SMTP mode if the field did not fill out your email address.
XML
<configuration version="1.2.0">
<applicationSettings>
...
<!-- Alternate e-mail sender (only in SMTP-mode). Is used if no sender address is specified -->
<alternativeSenderAddress>dummy@company.com</alternativeSenderAddress>
...
</applicationSettings>
</configuration>