From 15 june 2023 the university has installed a 'no automatic mail forwarding to external email address' policy. For details, please read UL policy Automatic Forwarding to external email address or read the policy document

The University mail servers have been changed to revoke automatic mail forwarding to addresses outside the leidenuniv.nl domain. This is done to make sure mails with GDPR sensitive data are not automatically forwarded to places where the university does not have a GDPR processing agreement.

Since the Observatory has its own mail server we have to implement the university policy ourselves, but can be much more creative than rigorously disable all forwarding, we have negotiated with the University that any mail containing GDPR sensitive data will have the word 'Vertrouwelijk' or 'Confidential' in the subject or body of that mail. Given this identification we have implemented a filter in your .procmailrc file that redirects any such mail back into your INBOX thus taking it out of the stream that allows you forwarding to an external email address.

In short, any email marked 'Vertrouwelijk' or 'Confidential' will go to your INBOX and all other email you can forward (or still is forwarded) to you favorite external (to leidenuniv.nl) email system. So you do not have to change anything, except look at your Sterrewacht inbox once in a while to see if a LeidenUniv GDPR sensitive mail has been sent to you. Our filter will inform you that such an event has occurred.

Note: If you write a confidential email to a Leiden employee you must mark that mail with 'Vertrouwelijk' or 'Confidential' (put this word in the mail Subject) to abide by the University Mail Forwarding policy.

We have installed, at the beginning of your .procmailrc file, a ruleset that will do the above mentioned actions. So please do not remove that as it helps you to abide the univerisity policy while retaining your automatic forward (if set).