Common reasons for such problems include:
| 1. | Interference between access control rules and rewrite rules. The address is rewritten before it is processed by the access rules, and the access rules handle the original and rewritten addresses differently. | |
| 2. | Interference between access rules. A typical case arises when a message is blocked using IP addresses only. Other rules involving addresses are never applied since IP level envelope information is sufficient to make an access decision. |
The problem can best be diagnosed using the debugging functionality. See "To Configure Diagnostics Output" on page 128