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Lorentz Institute Email

Upon registration of your account in your offices your Institute Lorentz email account will become active. Your email address will have the form and can be accessed via a webmail service and/or though your favourite email client.


Open a browser and visit

Email Clients

In order to access your Lorentz Institute email folders via your favourite email client you must configure it with incoming server

Incoming server: (IMAP port 993, connection security: TLS)

and outgoing server

Outgoing server: (SMTP port 465 or 587, STARTTLS security) 

Pine/Alpine configuration example

personal-name=Bingo Bongo

Mozilla Thunderbird

Please follow the instructions here. Note that there is a typo in the SMTP settings. It should read

Email Forwarding

Email forwarding can be set up either via the Lorentz Institute Account Services or by manually modifying .procmailrc in your home directory. In the latter case, see the following example.

If you want a copy of your mail forwarded to another address, add

:0 c

If you want your mail forwarded to another address, without keeping a local (on our servers) copy add this



The Lorentz Institute email server scans emails for viruses and spam. Nonetheless, it is possible that a few unwanted emails slip through our security mesh. Should the problem become unbearable (e.g. your inbox is filled with tens of unwanted emails), please do not hesitate to contact the helpdesk.

TIP: Please collect all wanted and unwanted e-mails in ad hoc folders. This will help the system administrators `train' the anti-spam software to generate better spam tags.

As of April 2016, all emails received by the Lorentz Institute servers will have SPAM header tags. This can be of help in determining why a particular email was not tagged as spam and can help devise better filtering rules.


To email all Lorentz Institute members use the alias institute.

To email the procurement office use bestellingen.

Should you want to email all maris cluster users, please us the alias maris-users.

To contact the helpdesk it is preferable to use our web application.

Note: Append to any alias above.


Computer support is generally available during working hours with the exception of emergency situations.

All Lorentz Institute users are encouraged to use the helpdesk to request help rather than emailing support. The reason why is simple. Our helpdesk application maintains a database of all present and past issues which greatly helps solving problems in the quickest way as possible. Moreover, while emails addressed to support are only read by a limited number of people, helpdesk tickets reach ALL computer workers in the Leiden University Observatory (STRW), Lorentz Institute (IL) and Leiden Institute of Physics (LION). This means that your issue can be resolved even though the IT personnel of your department is on vacation.

institute_lorentz/institutelorentz_email.txt · Last modified: 2020/10/12 11:47 by lenocil