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Content filter is it Sync or Async
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Hello,
We are trying to find out if content filter is synchronous or asynchronous.
Trying to figure out if content filter would slow down the server and by how much.
Thank you
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The content filter will slow down a server. How much it will slow things down depends on how many rules you have, what the rules are doing, and the capabilities of the server. The more mail it has to process the more noticeable the extra processing introduced by the use of the content filter will be. In most cases, you shouldn't even notice it.
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Thank you for your reply.
Would there be a way do a content filter only on the returning email?
Filter and check email only if it's a reply.
Thank you.
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There is not a specific setting in the content filter to only have it process returning email.
When the content filter is enabled all messages in the local or remote queue are processed by the content filter. However, each rule has an option to apply mail to only messages in the Local queue, only messages in the remote queue or both. If none of your rules are applied to messages in the Remote queue, then processing in the Remote Queue will be very fast.
You can also use the conditions of the rules to limit which messages are checked by each rule.
For example, you can create a rule so that if the In-Reply-To header does not exist stop all processing.
Then create a rule and place it below the other rule that says if the In-Reply-To header exists take specific actions.
Please keep in mind, there is no guarantee that all replies will have the In-Reply-To header. I'd suggest running some tests in your environment to see if using the In-Reply-To header will work for what you are trying to do and to see if there is other conditions that may work better for you.
