For some strange reason, I occassionally receive bounce-backs (i.e. Returned mail: ....) that have a double To: field in the headers... e.g.: To: <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> This is obviously wrong and gives qmail a headache. Instead of parsing the incoming bounce-back to a bounce-back handling Perl script (as it always did before) qmail now sends those bounce-backs to me and floods my mailbox... Is there a root cause for the problem and any idea how to fix it? I have been running in the same environment for months now and this problem only started very recently... Thanks for your help. Simon Grabowski