The email system used by Leander ISD is GroupWise. It can be used on campus via an installed client and can also be accessed from home through the web (webmail.leanderisd.org)

Spoofs: Emails Returned With Virus Warning
You will occasionally receive an email claiming that your previously sent email contained a virus - even if you never sent an email to this address. Contains explanations of what is happening and what to do.

Managing SPAM
GroupWise gives you various tools to manage the district's SPAM filters - including viewing presently blocked emails and creating exceptions to the SPAM filter. Includes instructions for managing these aspects (and many others) of the SPAM filter.