Spam Quarantine Box (Proxmox Mail Gateway)

To improve our measures against spam and phishing attacks, we have introduced a new mail gateway for all of the university's mailboxes (the so-called “Proxmox Mail Gateway”). This means that detected spam and phishing emails are not delivered to the Exchange mailbox, but kept in quarantine, where they are automatically deleted after 30 days. In the quarantine box, these emails can be read, deleted, forwarded to your mailbox, whitelisted or blacklisted.

Daily Spam Report and Web Access to Quarantine Box

Once a day, an email is sent to your Exchange mailbox to inform you if new spam/phishing emails have been received in the quarantine box in the last 24 hours (if none have been received, no report is sent). The links in this email lead directly to your quarantine box.

The quarantine box can also be accessed at any time via a web browser at https://mailknast.uni-mannheim.de. You can log in as follows:

Username	uni-id@ad.uni-mannheim.de
Password	Password of your Uni-ID

Reading View

Button	Description
Toggle Raw	Show source code of the selected email.
Toggle Spam Info	Show spam evaluation information of the selected email.
Download	Download the selected email as an .eml file.
Whitelist	Add the sender of the selected email to your personal whitelist. This means that emails from this sender will no longer be classified as spam and will be delivered directly to the Exchange mailbox. Also delivers the selected email to your Exchange mailbox.
Blacklist	Add the sender of the selected e-mail to the personal blacklist. This means that emails from this sender will be deleted immediately in future and will not be kept in the quarantine box or delivered to the Exchange mailbox. Also deletes the selected email.
Deliver	Deliver the selected email to your Exchange mailbox.
Delete	Permanently delete the selected email.

Not all emails are displayed?
By default, you only see emails from the last 7 days. To ensure that older emails are also displayed (up to 30 days in the past), the date filter must be changed:

Whitelist

Addresses and domains can be whitelisted here, i.e. emails coming from these addresses and domains are delivered directly to your Exchange mailbox without a spam check.

Examples:

*@gmail.com	All emails that come from senders ending in @gmail.com.
*unit.uni-mannheim.de	All emails ending in the address range unit.uni-mannheim.de, e.g. melanie.muster@sekretariat-unit.uni-mannheim.de, rundmails@info.unit.uni-mannheim.de etc.
melanie-mustermail-vertrieb-xyz.de	All emails coming from this address.

Blacklist

Addresses and domains can be blacklisted here. This means that emails that come from these addresses and domains are deleted directly and irrevocably without a spam check.
The entries are created in the same way as for the whitelist (see above).