Blocked Email Attachments
There are some attachments that will not send if you try to attach them to an email message.
These attachments are:
ade, adp, ani, bas, bat, chm, cmd, com, cpl, crt, dll, exe, hlp, hta, inf, ins, isp, js, jse, lnk, mdb, mde, msc, msi, msp, mst, pcd, pif, reg, scr, sct, shb, shs, vb, vbe, vbs, wri, wsc, wsf, wsh
*Note: An attached .zip file that contains one of the file types listed above, will also fail to send.
Microsoft Outlook
When to Use Caching
In general, you will experience better performance with your email program if you have caching enabled (generally enabled by default). Caching mail makes copies of your mail messages to your local hard drive, which is useful for accessing messages offline, with slow connections, or if often on the move. Without caching no mail will be available without a connection.
If you have a large mailbox (10GB and over), it may be beneficial to disable caching or cache only for during a certain time period. Please refer to the following recommendations for using caching with your mail client:
- Outlook for Mac: Enable Caching
- Caching is enabled by default and you should not change this setting unless experiencing significant issues with Outlook performance.
- Learn how to clear the cache in Outlook for Mac.
- Outlook for Windows: Enable Caching
- If you begin to experience application pauses, especially when retrieving new messages, you may consider turning off caching.
- Learn how to turn on/off cached exchange mode.
- Outlook for Windows: Reduce OST File Size
- Outlook allows a user to reduce the size of their offline Outlook Data File (.ost), which can also improve performance. Learn how to reduce the size of your mailbox and Outlook Data Files.
Clearing Nickname Cache in Outlook
To clear nickname cache in Outlook, follow the following steps:
- Start to type a name in the address field of a new email. A nickname list will appear and can be browsed by scrolling up or down.
- To delete a name from the list, simply highlight the name in question and hit the Delete key.