Hello, I am trying to use OTRS filtering features, that allows to use custom external script for filtering. I am talking about Ticket -> Core::PostMaster -> PostMaster::PreFilterModule###4-CMD: configuration option. But it looks like that PostMasterPOP3.pl script dies with "Broken pipe" error when filter meets message larger than 65535 characters: $ /usr/local/otrs/bin/PostMasterPOP3.pl Message 1/54 (inside_153@pop.peterhost.ru) Broken pipe And it is not script problem - I tried to substitute a dummy script, that just logs time of execution and exits, and there was "Broken pipe" still. To have a quick workaround, I patched Kernel/System/PostMaster/Filter/CMD.pm to check current message size and skip filter if it is larger than 64k: --- CMD.pm.orig Thu Jan 17 18:04:58 2008 +++ CMD.pm Thu Jan 17 17:44:58 2008 @@ -57,7 +57,8 @@ } # execute prog my $TmpFile = $Self->{ConfigObject}->Get('TempDir')."/PostMaster.Filter.CMD.$$"; - if (open(PROG, "|$Config{CMD} > $TmpFile")) { + my $PlainEmail = $Self->{ParseObject}->GetPlainEmail(); + if ((length($PlainEmail) <= 65536) and open(PROG, "|$Config{CMD} > $TmpFile")) { print PROG $PlainEmail; close (PROG); } Test perl script that uses pipes works fine on my system: $ cat pipetest.pl #!/usr/bin/perl -w my $PlainEmail = "T"x10000000; open(PROG, "|/usr/home/otrs/bin/if-letter-is-spam-adv.awk > /tmp/cronfy"); print PROG $PlainEmail; close (PROG); So this is some OTRS-related problem. Did anyone meet this? Any ideas? Thanks in advance. -- Cronfy.