Hi!

I am running a courier setup, where I have installed some mail filters, that are responsible to do spam and virus checking as well as greylisting. With vanilla courier I have to problem, that also all mail that is sent by my clients get checked by these filters. While this does not hurt much for the spam/virus checking (only a small delay in accepting the mails), this is a big problem when doing greylisting.

Because courier does not pass information to the filter, if the mail has been received authenticated, I had to check the first received header instead and search for "(AUTH:" in there. I consider this to be a hack, and it is not a very beautiful solution.

The better solution would be to configure courier to not pass mails to the filters, that are received from clients. This is why I would like to propose the following extension to courier: Introduce a new configuration keyword "SKIPMAILFILTER", which configures courier to not filter received messages by this process. This configuration keyword can then be added to the esmtpd-msa configuration file to disable filtering of mails received by customers.

The attached small patch implements this keyword.

Matthias

Patch against courier-latest in CVS:

--- submit2.C.orig 2007-09-26 02:06:35.635912696 +0200 +++ submit2.C 2007-09-26 02:07:07.053558697 +0200 @@ -965,6 +965,7 @@ SubmitFile *voidp=this;

if (filter_enabled && + !getenv("SKIPMAILFILTER") && run_filter(dfile.c_str(), num_control_files_created, iswhitelisted, &SubmitFile::get_msgid_for_filtering, &voidp))