Information Mailscanner

Every day, around 200,000 incoming emails are not accepted by MailScanner due to the poor reputation of the sending server. Through SPAM detection and tagging, a further approx. 15,000 emails per day are filtered, as well as approx. 6,000 emails whose email address is not known to the University of Kassel (as of March 2023).

The emails that have been recognized as spam are supplemented with the character string "{Spam?}" in the subject line. If you do not want to find emails marked as spam in your mailbox, you can use rules in your mail client to sort them into specific folders or delete them straight away. On our main Exchange mail server, there is already a default rule for each user that moves emails marked as spam to the Junk email folder. You can reach this folder via the web access mail.uni-kassel.de. If you use an e-mail client (e.g. Outlook or Thunderbird) via the IMAP protocol, you can subscribe to this folder.

If you do not want the mails recognized as spam to be delivered at all, we can also delete these mails for you directly in the MailScanner. For those users who ticked the "Delete spam" box in the previous "HRZDB" user administration, this setting has also been adopted for the new MailScanner. If you are a new user or did not check the box back then and would like to delete spam directly, please send an e-mail to . Please note, however, that e-mails that were incorrectly marked as spam will also be deleted.

Emails that are not 100% recognized as spam, but are highly likely to be spam, are marked with the subject "{Suspected Spam?}". There is no standard rule for this in the Exchange MailServer.

Incoming and outgoing emails are scanned for viruses.

If incoming e-mails contain viruses, the entire e-mail is placed in a quarantine folder on the MailScanner for five days. The recipient, i.e. you, receives a message about this. If the e-mail has been incorrectly identified as a virus and you would like to receive the e-mail, please contact our IT service desk within the five days on +49 561 804 5678.

If the attachment cannot be scanned by the virus scanner for various reasons, the text "{WARNING: Antivirus, not scanable attachments; WARNING: Antivirus, not scanable Attachement}" will be inserted in the subject line of the e-mail. You must then decide for yourself whether you trust the sender of the e-mail or not.

Outgoing e-mails containing viruses will not be sent. The sender, i.e. you, will receive a corresponding message.

If you have any further questions about MailScanner, please contact the IT service desk on: +49 561 804 5678 or by e-mail: it-servicedesk[at]uni-kassel[dot]de