From: Shawn P. Stanley Date: 16:59 on 04 Oct 2006 Subject: Mail clients that abuse the Sender: line Gmail uses the "Sender:" line to show which Gmail account you're sending from regardless of how you've configured your "From:" or "Reply-To:" lines. Just in case anyone cares about your Gmail account. But why should they, unless you're dealing in kiddie p0rn? So why do Outlook, Outlook Express, Lotus Notes, etc. think they should take the "Sender:" line and treat it as your "From:" line or your "Reply-To:" line instead? RFC822 doesn't tell them to do that. Hate.
From: Ricardo SIGNES Date: 17:12 on 04 Oct 2006 Subject: Re: Mail clients that abuse the Sender: line * "Shawn P. Stanley" <shawn@xxxxxxx.xxx> [2006-10-04T11:59:57] > Gmail uses the "Sender:" line to show which Gmail account you're > sending from regardless of how you've configured your "From:" or > "Reply-To:" lines. Just in case anyone cares about your Gmail > account. But why should they, unless you're dealing in kiddie p0rn? > > So why do Outlook, Outlook Express, Lotus Notes, etc. think they > should take the "Sender:" line and treat it as your "From:" line or > your "Reply-To:" line instead? RFC822 doesn't tell them to do that. Recently (around Sep 21), PayPal started adding this to their invoice notices: Sender: <sendmail@xxxxxx.xxx> Result? Procmail now thinks that these messages match FROM_DAEMON. This isn't so much a Sender-hate as a PayPal and Procmail hate.
From: Tony Finch Date: 17:24 on 04 Oct 2006 Subject: Re: Mail clients that abuse the Sender: line On Wed, 4 Oct 2006, Shawn P. Stanley wrote: > Gmail uses the "Sender:" line to show which Gmail account you're > sending from regardless of how you've configured your "From:" or > "Reply-To:" lines. Just in case anyone cares about your Gmail > account. But why should they, unless you're dealing in kiddie p0rn? This is a knotty area. I like this idea: it's what 2822 says Sender: is for and 4409 recommends that submission servers fix up Sender: in this way. In fact I want to do it at work to protect against undergraduates playing silly email forgery games. However Sendmail has never done this, not even for local submissions. (Exim follows the standard more closely, whereas Postfix follows Sendmail.) So it isn't entirely surprising that it is screwed up by the dickheads at MICROS~1 who code to cargo cult ideas of implementation behaviour rather than looking at the actual specifications. Tony.
Generated at 10:26 on 16 Apr 2008 by mariachi