Hello, PMFJI.
Am 09.12.2012 um 01:18 schrieb Sam Clippinger <[email protected]>: > How interesting. I wonder why they're doing that Whatever the answer to this question might be ... It's perfectly legal to do this. RFC 5322, sec. 3.6.2 explicitly states "The from field consists of the field name "From" and a comma- separated list of one or more mailbox specifications." I guess the intention behind this is to allow sending a mail in the name of a group of people, e.g. a board, before group addresses or mailing lists became popular. To make clear who's actually sending the message there's a little more in the RFC: "If the from field contains more than one mailbox specification in the mailbox- list, then the sender field, containing the field name "Sender" and a single mailbox specification, MUST appear in the message." So maybe any spam checking for multiple from addresses should better include a check for obligatory "Sender". The given example didn't had one. > -- do they think a mail agent will check all of the addresses in the address > book and refuse to junk the message if one is found? If the MUA is working correctly it should behave like this (or similar), because as stated it's perfectly legal to have multiple addresses in "From:" (albeit you're only allowed to have one "From:" header). I guess as always, this is a case of balancing anti-spam mechanism vs. not killing perfectly legal messages; Only having multiple addresses in "From:" in the end is not a clear sign of "this is a spam message" :-/ -- Best regards, Peter _______________________________________________ spamdyke-users mailing list [email protected] http://www.spamdyke.org/mailman/listinfo/spamdyke-users
