26.3.10.2 Common Syntax Problems

• If there is a syntax problem with the filter, then look for the following message in the tcp_local_slave.log-* file:

  Error parsing filter expression:...

  • If the filter is good, then filter information will be at the end of the output.

  • If the filter is bad, then the following error will be at the end of the output:Address list error -- 4.7.1 Filter syntax error: desdaemona@sesta.com

    Also, if the filter is bad, then the SMTP RCPT TO command will return a temporary error response code:

  RCPT TO: user@domain 452 4.7.1 Filter syntax error