Import fixes made in filter-dkim

Import commit filter from dkim signer

Do not free session if not spam and not markspam. We still promised smtpd to filter the data.

Mark as resolved as we may pass through dnsbl_session_query_done more than once

Finally fix big memory leak

End va_copy

Plug a memory leak. Major leak still pending

Don't botter writing if we're pending EV_WRITE. While here, rename ev to stdoutev

Make sure we call event_init only once

Initialize event_init so we can use it during smtp_register*

This should be && and not ||

Add a custom printf function that's not susceptible to EAGAIN.

Clean up our loggin a little bit. - Make sure we mention our reqid instead of ip-address. This makes grepping the log easier - Make line format a little more consistent - Drop ip-address from line: it's mentioned in the line before While here use data command to reappend the X-Spam header, since a single request can handle multiple messages.

Add support for filter-data

Rename dnsbl to filter-dnsbl

Make the linedup a little less calculation-intensive

Add a manpage

Replace getline with custom function. Getline doesn't play nice with nonblocking io

Logging an unmodified line works better

Move the debugging info, so we don't log every damn line in the body

Temporarily add extra debugging info

debug doesn't require an argument

Add info messages about filtering

Switch from err.h to log.h

Reorder for logic reasons