====== Exim4 - Test Exim4 Authenticators ======

Exim's **-bh** option can be useful for testing server authentication configurations. 

<code bash>
exim -bP authenticator_list
exim -bP authenticators
exim -bP authenticator <authenticator name>
</code>

<WRAP important>
**NOTE**:  The data for the **AUTH** command has to be sent encoded in base 64. 
</WRAP>

<WRAP tip>
Perl's MIME::Base64 can be used for Base64 encoding.
</WRAP>

<code bash>
perl -MMIME::Base64 -e 'print encode_base64(&quot;user\@mytestdomain.com&quot;)'
perl -MMIME::Base64 -e 'print encode_base64(&quot;password321&quot;)'
</code>