What should I put for webmaster email?

Does Ubuntu Server have some kind of internal email where an email addressed to: webmaster@domain1.com would land?

Or should I put my email address where webmaster@domain1.com is in this configuration file?

Code:# Content of: /etc/apache2/sites-available/domain1.com.conf

<VirtualHost *:80>
ServerName domain1.com
ServerAlias www.domain1.com
ServerAdmin webmaster@domain1.com
DocumentRoot /var/www/domain1.com/public_html

<Directory /var/www/domain1.com/public_html>
Options -Indexes +FollowSymLinks
AllowOverride All
</Directory>

ErrorLog ${APACHE_LOG_DIR}/domain1.com-error.log
CustomLog ${APACHE_LOG_DIR}/domain1.com-access.log combined
</VirtualHost>Should I put some kind of footer with a link to this email??

I have never done that.

Hardly anyone uses my webpage, just a some students during term time. If they want me, they send a message in QQ.