Disable From: Checking
This allows you to disable the built-in phrases Lyris List Manager normally uses when receiving mail. Lyris List Manager uses some regular expressions to block common types of spam,
and disabling the From: checking will bypass using those regular expressions on the From: field.
For example, a message from postmaster@somedomain would normally be blocked, because postmaster@ is an automated address that usually sends delivery errors. However, a real person might use their
postmaster@ account to belong a lyris list and you might want to allow this.