-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On 10/06/2010 17:12:50, Jerry wrote: > On Thu, 10 Jun 2010 15:12:48 +0200 > Jonathan McKeown <j.mcke...@ru.ac.za> articulated: > >> On Thursday 10 June 2010 15:04:53 Matthew Seaman wrote: >>> >>> The only other mechanism might be to tag each list e-mail with a >>> unique value for each recipient in such a way that it is preserved >>> in the message that mpcustomer.com's help system sends out. That >>> has severe problems of scale and load on the FreeBSD mail servers, >>> but it might be possible. There is a similar technique (whose name >>> I have temporarily forgotten) that some mailing lists use where >>> they tag the envelope sender address with the recipient name in >>> order to identify addresses that are bouncing back the list e-mail. >> >> Isn't that called VERP (variable envelope return path)? I agree - the >> load it would impose isn't worth it. I'm just shocked that midphase >> care so little about their reputation or the impression this is >> giving, on one of the more widely-archived mailing lists, of their >> competence and diligence. > > I have employed VERP with mailing lists that I controlled. I never > noticed any adverse effects. I know of several technical lists > like Dovecot that employ it. Obviously, they find it useful.
VERP itself is reasonably lightweight, as it modifies the envelope sender address -- something that can be applied during processing by the MTA as part of sending the message. Unfortunately, I suspect that to get the message through to mpcustomer.com and then have it spammed back to the sender *with the tag intact*, VERP per se won't do the trick. It will probably be necessary to put the tag into the body of the message. As far as mail delivery goes, that's a very different story -- it goes from one message with tens of thousands of recipients, to tens of thousands of messages each with one recipient. Cheers, Matthew - -- Dr Matthew J Seaman MA, D.Phil. 7 Priory Courtyard Flat 3 PGP: http://www.infracaninophile.co.uk/pgpkey Ramsgate JID: matt...@infracaninophile.co.uk Kent, CT11 9PW -----BEGIN PGP SIGNATURE----- Version: GnuPG/MacGPG2 v2.0.14 (Darwin) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEYEARECAAYFAkwREzsACgkQ8Mjk52CukIyueACfRxA92D363Qf73nqRmoDLAYSu 7NcAnRl9BdZfax3+65N0y9Wxr3yy22hQ =2Edq -----END PGP SIGNATURE----- _______________________________________________ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "freebsd-questions-unsubscr...@freebsd.org"