Google Message Security for Google Apps Administration Guide - Manual (Page 256)

256 Message Security for Google Apps Administration Guide
At the user level in the Message Center, you can configure:
• Approved Senders (individual email addresses)
• Approved Domains (individual domains)
• Approved Mailing Lists/Email Lists (individual list addresses)
• Blocked Senders (individual email addresses)
• Blocked Domains (individual domains)
Approved Senders
Messages from individual senders or entire domains are delivered to user
inboxes, regardless of spam-like content. Approved senders always circumvent
junk email filters. However, if virus blocking is enabled for the recipient, the
message security service does not deliver a message containing a virus, even if
the sender is approved.
Approved senders can optionally override Attachment Manager and Content
Manager filtering.
Approved Recipients
Messages sent to approved recipients or entire domains are delivered to user
inboxes, regardless of spam-like content. Messages to approved recipients
always circumvent junk-email filters. However, if virus blocking is enabled for the
recipient, the message security service does not deliver a message containing a
virus, even if the sender is approved.
Approved senders can optionally override Attachment Manager and Content
Manager filtering.
You can use the approved-recipients list to allow mailing/email lists to bypass
spam filters by enter the list address.
Many mailing/email-list and newsgroup emails contain characteristics in common
with spam. In fact, one person's opt-in mailing/email list can be perceived by
another person as spam.
If you find mailing/email-list or newsgroup postings quarantined in the Message
Center, add the mailing/email-list address to the approved-recipients list to
prevent those messages from being quarantined.
The approved-recipients list evaluates the “To” and “Cc” fields on each message
since mailing/email-list addresses are usually in these fields rather than the
“From” field.
Never add a user to his or her own approved-recipients list. Since the list is based
on the recipient of the email, this causes all mail to bypass filtering.