There isn’t a master “whitelist” per say for the entire domain, but some controls can be setup by the user.

1. Unmarking a message as NOT SPAM which is done A) by clicking “not spam” while logged online or B) Moving an email from the Spam folder to your Inbox (both actions do the same thing) reportedly trains the gmail spam filters for future use.

Legitimate Spam? https://mail.google.com/support/bin/answer.py?hl=en&answer=9008
Spam Learning? http://www.google.com/support/forum/p/gmail/thread?tid=01319697300a076e&hl=en
Removing Spam? https://mail.google.com/support/bin/answer.py?answer=6602

2. Creating a “Filter” is another way to ensure all mail from a particular user or domain can be done.

[callout1]Create a Filter? https://mail.google.com/support/[/callout1]

Screen Shots of Show the Process:

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[lightbox style=”modern” image_path=”https://www.mitostudios.com/wp-content/uploads/2011/12/12-7-2011-3-30-22-PM.jpg” popup=”https://www.mitostudios.com/wp-content/uploads/2011/12/12-7-2011-3-30-22-PM.jpg” link_to_page=”” target=”” description=”Hit “Filter messages like this” from the gmail interface.” size=”three_col_small”]
Hit “Filter messages like this” from the gmail interface.
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[lightbox style=”modern” image_path=”https://www.mitostudios.com/wp-content/uploads/2011/12/12-7-2011-3-31-00-PM.jpg” popup=”https://www.mitostudios.com/wp-content/uploads/2011/12/12-7-2011-3-31-00-PM.jpg” link_to_page=”” target=”” description=”Set the entire domain by using wildcard *@domain.com” size=”three_col_small”]
Set the entire domain by using wildcard *@domain.com
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[one_third_last]
[lightbox style=”modern” image_path=”https://www.mitostudios.com/wp-content/uploads/2011/12/12-7-2011-3-31-33-PM.jpg” popup=”https://www.mitostudios.com/wp-content/uploads/2011/12/12-7-2011-3-31-33-PM.jpg” link_to_page=”” target=”” description=”This last one also shows the automatic Label (Folder) that I apply for each client/domain.  That’s not required for Spam filtering.” size=”three_col_small”]
This last one also shows the automatic Label (Folder) that I apply for each client/domain.  That’s not required for Spam filtering.
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