Hi,
In order to use the automatic bounce handling you need to configure a dedicated bounce emal address. Acymailing uses this address as the bounce address in the emails you send. Any bounce messages will be send to this enmail address. Acymailing then logs into you bounce mail box and processes the bounce messages.
For the bounce rule "Mailbox full" yu can set how many bounces messages you acept before executing the action of the rule. By default it is set to 3. So the first two bounce messages "Mailbox full" for a user nothing happens, Acymailing just deletes the bounce message. When this bouince messages for this user is received for the third time the user will be deactivated.
The 403 error comes from you webserver. It somehow doesn't provide you access to something. To provide you with the best assistance possible, I kindly request that you submit a support ticket through our website at https://www.acymailing.com/support/. Our team will be able to efficiently and effectively provide you with the assistance you need.
Please note that our ticket support is exclusively available for our customers with an active Essential or Enterprise license. If your license has expired or you are using the Starter version, we kindly invite you to renew or upgrade your license prior to opening your support ticket.
