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Question Mail handlers: Differentiate between inbound and outbound email

Lutuh

New Pleskian
Hi all,

this question is about the Mail Handlers feature in Plesk 12.5 for Linux (https://docs.plesk.com/en-US/12.5/extensions-guide/mail-handlers.71844/). I'm using Postfix.

I've added a before-queue mail handler to Plesk in order to filter some messages before they are queued. This handler is being called for inbound messages (= from other hosts) and outbound messages (= from my host to other hosts). Is there any way to differentiate between these two types? I'd like to only apply the filtering to inbound messages.

I know it would be possible to match the recipient against the list of local email accounts and bypass the filtering in this case, as a workaround. Just wondering if there is the "right" way to do it.

Thank you for any ideas or suggestions you might have on this topic.

Cheers,
Lucas
 
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