Error Code: 500 Internal Server Error. The request was rejected by the HTTP filter. Contact your ISA Server administrator. (12217)
WORKAROUND
loadTOCNode(1, 'workaround');To
work around this issue, configure the Web publishing rule so that it
does not block high-bit characters. To do this, follow these steps:
| 1. | Start the ISA Server Management tool. |
| 2. | Expand ServerName, where ServerName is the name of your ISA Server computer. |
| 3. | Click Firewall Policy, click the Web publishing rule that you created to publish the Exchange Server computer for access by OWA users, and then click Edit Selected Rule. |
| 4. | Click the Traffic tab, click Filtering, and then click Configure HTTP. |
| 5. | Click to clear the Block high-bit characters check box, and then click OK two times. |
| 6. | Click Apply to update the firewall policy, and then click OK. |
obtained from: http://support.microsoft.com/default.aspx?scid=kb;en-us;837865
