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Proofpoint, Inc.

Filter Creation Character Limit

Situation Trying to add a list of addresses to a filter and it will not save. Is there a character limit?
Solution Creating/Editing a filter has a character limit of 5000 characters.


Filter Limits

When creating or editing a filter and it does not save, this is probably due to the character limit.
Filters have a limit of 5000 characters

If you are adding a list of addresses or CIDR ranges to a filter, it would be best to use the Sender Lists. These do not have a character limit.

This can be found under Security Settings > Email > Sender Lists.

sender lists.PNG