This screen allows you to add to your null list. Note that regular expressions
can be used so you can modify the Email address below to be any
portion thereof or specify a regular expression. Here are some examples.
Given an email address of Spammer@spamdomain.com you can:
Specify just the domain (e.g. @spamdomain.com). This will effectively
discard all email from everybody at that domain.
Specify just the username portion (e.g. Spammer@). This will effectively
discard all email from anybody using the username of spammer (note that
email addresses are not case sensitive) from any domain
Use regular expression characters to further refine your filter.
For example, "^spammer.*@" means any email from an address that starts
(^) with the word "spammer", has any number of characters after (.*), then
an "@" sign will be discarded.
Warning
Care should be taken when using regular
expressions as you can easily lose email messages you do not want to have
discarded!