University of Manitoba's Bulk Email Filter - DCC
The University of Manitoba's email system rejects messages that have been mailed in bulk because these messages are usually spam. We return them to the senders with an explanation of why they have been rejected. We also keep a list for 14 days of messages sent to you that have been rejected.
Receive your weekly summary by email
You may want to subscribe to this mailout service instead of having to remember to check the DCC web page. Use your UMnetID to subscribe. (Your Firstname_Lastname alias will not work.) You will receive an email request to confirm your subscription.
After your confirmation is received, each Monday morning you will be sent a summary of your identified spam bulk mail of the previous 14 days.
You can unsubscribe at any time using the same web page.
Check and whitelist your bulk mail on the DCC web page
Login to this page with your UMnetID username and password. (Your Firstname_Lastname alias will not work.)
You will see a list of the filtered mail that was addressed either to your Firstname_Lastname alias or to your UMnetID at cc.umanitoba.ca address.
Look for legitimate mail amongst your spam.
Click on View beside a message that appears legitimate in the bulk mail summary to examine it further. If it is indeed not spam, you can click on Nominate to add that sender to the University-wide whitelist. Once the sender is white listed by anyone at UofM, future messages from that source will not show up in the bulk mail list.
Contact the IST Help & Solutions Centre if you need help.
When does DCC consider a message bulk mail?
A message is considered bulk mail when over 100 copies, as seen by DCC sites around the world, contain substantially identical content. A message can be rejected even when only one copy arrives at the UofM. DCC compares only the body of a message when checking for bulk mail, not the header or attachments.
My requests for Confirmation of Receipt are caught as spam!
Solution: Whitelist it. Receipt confirmations are identical to each other and are therefore bulk mail. We have whitelisted most variants, but each new mail program version may have a different format and so new ones will be caught as spam until one UofM user whitelists one example. Then all the rest from that mail program version will get through. One person's whitelisting helps everybody else. Please help.
Why was that message blocked... It isn't spam!
1. DCC does not look at attachments when checking for bulk mail.
2. If your email message contains no English, Spanish, or Polish words, it may get classified as bulk mail.
Why isn't my missing mail in the bulk mail summary?
If you are sure the email address was correct, allow enough time for delivery delays and the summary update; then check again. The bulk mail summary is updated only twice an hour.
Do I get the message I whitelist?
How does the whitelist work?
Who can whitelist a message?How do I know if an email has already been whitelisted?
If it has already been whitelisted and you nominate it, DCC will tell you. There is no harm in making duplicate nominations.
What if someone whitelists mail that shouldn't be?
The nominator's address is logged. Accidental nomination can be undone by the postmaster. Unintended nomination of spam is unlikely since spam is rarely sent from the same address twice.
For more information, visit the DCC product site.