-----BEGIN PGP SIGNED MESSAGE----- My PGP based time stamping service is back online. I took it down a while ago thinking the folks at notary.com (Digital Time-Stamp, Inc.) were going to release their commercial time stamping product soon (it uses a more elegant protocol that doesn't require trust in the time stamper, but the algorithm is patented). But I haven't heard anything from them in a while. Anyway, it is now running as the following procmail recipe: :0 w * ^Subject: Time Stamp This Mail { PGPPASS=whateveryourpassphraseis :0 c w | (lockfile timestamp.lock ; pgp -fast +batchmode +force +verbose=0 \ +clearsig=off) > timestamp.out :0 a h | (formail -r -i 'Subject: Time Stamp Output';cat timestamp.out) | \ ($SENDMAIL -t ;rm -f timestamp.lock) } To use it, just send whatever you need time stamped to me with the subject "time stamp this mail". BTW, can a procmail expert explain to me why the locallockfile mechanism doesn't work with this recipe? If I use :0 w : as the first line, procmail will happily ignore the locallockfile flag and proceed to munge up timestamp.out, so I have to do the filelocking manually. Wei Dai -----BEGIN PGP SIGNATURE----- Version: 2.6.2 iQCVAwUBLxU7Zjl0sXKgdnV5AQE1agP/TFGtHEUj6GUwEF1ISGLcUZ/T64Vs7BUJ PIcydYUDk/5AVPLS2F8r81oLLxDUzYFkVy/6uvhnj6Pvo17ZIx6ELhKNPLPVoLPL iklR9E7rmY2cRMQfuCPRYi10x4mD9yJcw0GmlQmgOqZS/HfQ30njrsAeDXBUNvA5 SvFBaPKuOro= =NNoJ -----END PGP SIGNATURE-----