Can i filter messages for unregistered users – Google Message Security Troubleshooting Guide User Manual
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48 Message Security Troubleshooting Guide
The message might have characteristics that make it look like spam, such as
disclaimers, URLs, dollar signs, multiple exclamation points, and little or no
body content apart from a link, image, or file attachment. The more such
characteristics it has, the more likely it will be caught, depending on your filter
levels.
Special Offer filter -- In particular, aggressive category filters can falsely tag
valid messages as spam. Try lowering category settings, beginning with the
Special Offer filter. Businesses tend to receive legitimate email containing
commercial content, so false positives in this category are more likely.
Bulk Email filter -- An aggressive Bulk Email filter can falsely tag valid emails,
too, but should do so less often than a category filter.
•
A listserv or news group server sent the message.
Mailing lists share many characteristics of spam. If the sender address is
always the same, for example, [email protected], add it to the user-
level Approved Recipients list.
•
The message was sent by an automated email service and appeared
“spoofed.”
This might include a message from a group reservation or auction site. Add
these addresses to your org-level Approved Senders list.
•
The sender appears on the org-level or user-level Blocked Senders list.
Remove it from this list.
•
If messages are being received from a particular sender that are regularly
being falsely quarantined, the sender's email address or domain can be
added to the user's or organization's Approved Senders list to ensure that
future messages are not quarantined.
•
Examining the spam score in a message’s header can also provide clues to
why it was identified as spam. For more information, see .
For more information about how to achieve the most effective spam filtering, see
.
Can I filter messages for unregistered users?
It depends on how you have configured your organizations:
•
An unrecognized user can be automatically added to your organization and
then filtered for spam
•
The unrecognized user’s message can be bounced and not filtered
•
Deliver the unrecognized user’s message without filtering or adding the user
to the email security service
For more information, see.