On 2023-06-03, John Stoffel john@stoffel.org wrote:
"Oliver" == Oliver Glas oliver.glas@inss.ch writes:
I am looking for a way to remove attachments, based on a condition. Like attachments starting with "TimeReport" shall be removed, and then the mail should be delivered, with all other attachments.
This is not a solution that dovecat can work with. You need to use a milter in your mailserver (like postfix) which can strip out mime attachements or do other modifications to an email before it's delivered to the mailbox.
I did so far not find a solution to remove attachments. Do I need a plugin / extension ? If so, how to implement and use that ?
milters are what you want. MIMEdefang is one.
You can also do this by calling altermime from sieve with the vnd.dovecot.filter extension from https://doc.dovecot.org/configuration_manual/sieve/plugins/extprograms/