There are three rules for list use, due to spam considerations.
- You must be subscribed to the list to send to it.
- Any messages with attachments bigger than 100kb may be automatically blocked.
- Sometimes messages will be blocked because you are attempting to send it to too many people in the "to" or "cc" lines of your email at once.
If you think that either of these have blocked you, send an email to [email protected] for assistance.