I'm looking for suggestions on hosted spam filters. I'm familiar with Postini but understand it may be going away or not available in the future.
Can anyone provide a hosted spam filter recommendation that has the following?
Email Spooling in the event of Internet or server outage.
The ability for the users to manage their own safe and blocked senders lists.
Filter aggressiveness settings.
Daily email notification of quarantined messages to the users.
And the possibility of message continuity such as archiving and viewing messages in the event of an outage.
Thanks for any and all responses.