On Tue, Feb 1, 2011 at 1:01 AM, Roberto Puzzanghera <ad...@sagredo.eu> wrote: > Hello Manvendra, I'm testing your patch and reading all your docs. > Can you please clarify which is the advantage of filtering at smtp level?
At the SMTP level, qmail-smtpd does not break a mail addressed to multiple recipients. Hence a single mail addressed to multiple recipients will undergo encryption/decryption for DKIM only once. In case you decide to do DKIM at remote/local delivery for better control on signing/verification, DKIM will happen for every delivery. At the local/remote delivery, qmail-send does an individual delivery for each recipient in an email message. So if you have a mail addressed to 10 recipients, DKIM will happen 10 times. Also if the delivery to the destination fails with a temp error, the delivery will be retried and DKIM will also happen again. !DSPAM:4d47722532716834316241!
