
The limit can be adjusted on Exchange Server 2007 or 2010, by adding a new registry key value to the following registry key. Once the 510KB limit is reached, Outlook alerts you and additional addresses aren't saved until you remove some from the list. This is because the total size of all lists combined cannot exceed 510KB. In Outlook and older versions of Exchange, the limit is approximately 1000 total. In and Office 365, the limit is 500 on the blocked list and 1024 on the safe lists. How many addresses can the safe and blocked lists hold? If you choose to trust mail from addresses in your Contacts and you created a contact for yourself, all mail sent to you will be trusted. I don't add people I send mail to, to my Safe Senders list because I reply to a lot of people just once or twice and my list would fill up fast, but it is recommended for most users. One is a person who forwards a lot of junk and the other is a newsletter I can't get unsubscribed from. My own blocked list has 2 addresses on it. It's either placed in the Junk Mail folder or deleted, per your Junk mail options.įor this reason, and the reasons listed below, it is highly recommended that you add names to the Safe lists (to avoid false positives) and let the Junk Mail filter take care of the junk. and Office 365 accounts had a limit of 500 addresses or domains on the blocked list and 1024 addresses on the combined Safe lists.īlocked senders are treated as Junk Email and the messages will be handled the same way as mail filtered by the Junk Mail filter. In Outlook for Windows, there is a limit of 1024 names for the Safe and Blocked list combined and you don’t want to fill it up with addresses that are never used again. Most spammers use an address for a short period then move on to another address and you end up blocking an address that will never send you mail again. If the junk mail filter is moving the messages to the Junk Email folder, there is no need to block the sender. The messages the rules are supposed to delete are moved before the rule runs. The rules run on mail in the Inbox after the Junk email filter has removed all the spam. If it's moved to the Junk Email folder, you might find it.Ĭreating rules to delete the mail won't work either. If the mail is dropped, you won't be able to recover it. One reason the messages are not blocked is in the event you accidentally add a "good" address or domain to the blocked list. Users expect that Blocked Senders are blocked from the mailbox, not moved to Junk Email. For more information on email clients and many other topics, check out our Email channel in the InMotion Hosting Support Center.Outlook’s Blocked Senders puts the sender’s address or domain on a list and messages will always be moved to the Junk Email folder. That completes our guide on making changes to the Outlook email client so that you don’t send a winmail.dat file.


The instructions should work in recent versions of Outlook but won’t work in Outlook 20 when emails are assigned to an address book entry. These changes are being made so that Outlook doesn’t send or convert messages to Rich Text. Here you can select HTML or Plain text as per the instructions above.

From there, instead of Message Format you will need to find Mail Format. For Outlook 2003 or 2007, you will need to click on Tools to get to the Options menu.
