Hi All, Recently it is found that the autoresponder doesn't send out email when the autoresponder checkbox is ticked. The following tests have been made: 1. send an email to that particular email account 2. check the .vacation.cache and I found that the sender email is there There is no problem in sending/receiving mail or mail forwarding. The problem is only no email seems to be sent out by the autoresponder function. Anyone has experience on how to troubleshoot it ? Thanks in advance. My Server Configuration: Fedora Core 12 server with ISPConfig 2.2.35 installed.