Exchange Policy
| Policy Description | IT Policy | Decision Background |
|---|---|---|
| Maximum mailbox size for DB users | 20GB max; save additional mails to PST (done manually by the user at this phase) |
According to Microsoft best practice, users with mailboxes above 20GB will start to experience delays in reading mails |
| Warning message interval for exceeding maximum mailbox size upon sending a message | Will get a warning from 17GB; will be blocked from 20GB | Warning message will allow enough lead time to proactively reduce mailbox size |
| Keep deleted items for (Days) | 30 days | Provide 30 days for rollback of deleted items. See FAQ on Recover Deleted Items. |
| Maximum receive mail size | 25MB | According to Microsoft best practice, users with mail items above 25MB may experience slow respones of the mail system |
| Maximum send mail size | 25MB | According to Microsoft best practice, messages larger than 25MB will likely be rejected on the receiving end. See FAQ section in our web site for how to send mails with large attachments. |
| Allow access for legacy mailbox after migration (Days) | 14 days | Allow enough time to compare and locate missing items. Exchange Mail is intended to become your primary mail. |
| Maximum number of recipients | 200 | Up to 200 users in one mail, preventing the possibility of sending spam or a virus to all WIS users |
| Max items per folder | 20K | According to Microsoft best practice, users may experience severe delays in accessing folders above 20K items via the WEB |
| IMAP | Not Supported | IMAP Protocol is not recommended by Microsoft, as it is not scalable for large deployment, and is known to cause Mail server performance issues. IMAP also lacks the integration of Calendar, Address Book and other new features available in Outlook. |