Sender: headers again

[fanf]

http://fanf.livejournal.com/44733.html

I just found out an explanation for Outlook's irritating behaviour that I was working around back in January. It turns out that Sendmail has never followed the standard's requirements for the Sender: header (it never adds or fixes it), so the developers of Outlook assumed that you would only see a Sender: header when the message had been transmitted via a mailing list. This makes the "from [list] on behalf of [author]" wording look relatively sensible. However, they should have used the bloody List-ID: which is supposed to be used for exactly this kind of thing.

What is worse is that Exim is out on a limb in this respect. Postfix used to follow the standard but was changed in 2000 to be bug-compatible with Sendmail. This is very irritating, because the standard behaviour is much more useful. Grr.

Comments

[http://users.livejournal.com/_nicolai_/]

I now hate Sendmail a bit more, while already hating Outlook a very great deal. I will soon be configuring my Exim MTA not to add the Sender: header because when our software at work running under the username USER1 emits email From: USER2 (typically USER2 == "support@companyname" so that replies go back to humans not sysadmins) and is read by people using Outlook they reply to USER1.

[bens_dad]

Hm. For a minute (or fifteen) I thought this might have some bearing on SRS (the "answer" to forwarding broken by SPF), but that uses the envelope From, not the From header.

The fact that the two "From"s are orthogonal ought to mean be good, but I'm not so sure it hasn't helped to allow such problems (the orthogonality means that the MUA doesn't show SRS unless asked, but if there had been some relationship the developers might have seen that they had broken something?)

[mikewd]

I believe Outlook does honour Reply-To: so it makes sense to set this for Support@name type e-mails. (We do that and replies from Outlook users always seem to come back correctly addressed to support).

It is probably still a good idea to have some sort of header in the message to allow you to identify the real sender for troubleshooting purposes so it might be worth rewriting the "Sender:" header into some sort of "X-sender:" that is not going to be trivially visible in the recipients MUA.
(Anyone with enough clue to examine the full headers is probably sensible enough to send to the correct addresses...).

[hollistergirlo6.livejournal.com]

viagra cialis (http://viagra-cialis.vernulsa.com)
cialis sample (http://cialis-sample.sotdiha.com)
buy cheap viagra online (http://buy-cheap-viagra-online.zamesto.net)
buy cheap viagra online (http://buy-cheap-viagra-online.comlive.biz)
It was developed by the biotechnology firm ICOS and marketed worldwide by Eli Lilly and Company under the brand name Cialis.
buy cheap viagra online (http://buy-cheap-viagra-online.sotdiha.com)
Side effects
gambling casino (http://gambling-casino.sotdiha.com)

2 Chemical information
The most common side effects when using Cialis are headache, indigestion, back pain, muscle aches, flushing, and stuffy or runny nose. These side effects usually go away after a few hours. Patients who get back pain and muscle aches usually get it 12 to 24 hours after taking the drug, and the symptom usually goes away after 48 hours.
buy cheap viagra online (http://buy-cheap-viagra-online.trahaet.com)
5 Marketing
buy cheap viagra online (http://buy-cheap-viagra-online.msna.info)
It works by inhibiting an enzyme known as PDE5. A 20 mg dose of Cialis is comparable to a 100 mg dose of sildenafil (Viagra).
cialis vs viagra (http://cialis-vs-viagra.sotdiha.com)



cialis side effects (http://cialis-side-effects.vernulsa.com)
7 External links
buy cialis (http://buy-cialis.vernulsa.com)
buy cheap viagra online (http://buy-cheap-viagra-online.vernulsa.com)
Cialis is a drug used to treat male erectile dysfunction (impotence).
cialis vs viagra (http://cialis-vs-viagra.vernulsa.com)
Drug interactions - organic nitrates
play black jack online (http://play-black-jack-online.vernulsa.com)
4 Drug interactions - organic nitrates
internet black jack (http://internet-black-jack.vernulsa.com)
internet black jack (http://internet-black-jack.sotdiha.com)
Cialis at work
In the United States, Cialis has Food and Drug Administration approval and became available in December, 2003 as the third pill after Viagra and Levitra. Due to its 36-hour effect it is also known as the "Weekend Pill".
play black jack online (http://play-black-jack-online.sotdiha.com)
buy cheap viagra online (http://buy-cheap-viagra-online.izmena.org)
online cialis (http://online-cialis.vernulsa.com)
buy cheap viagra online (http://buy-cheap-viagra-online.porapahat.com)
cialis free sample (http://cialis.sotdiha.com/sitemap.html)
6 Trivia

Since PDE5 inhibitors such as Cialis may cause transiently low blood pressure (hypotension), organic nitrates should not be taken for at least 48 hours after taking the last dose of Cialis.
black jack online (http://black-jack-online.porapahat.com)
generic cialis (http://generic-cialis.vernulsa.com)
Chemical information
cialis sample (http://cialis-sample.vernulsa.com)

buy cialis (http://buy-cialis.sotdiha.com)
The empirical formula for Cialis is C22H19N3O4, and its official organic name is (6R,12aR)-6-(1,3-benzodioxol-5-yl)-2,3,6,7,12,12a- hexahydro-2-methyl-pyrazino[1 ,2 :1,6]pyrido[3,4-b]indole-1,4-dione. The molecular weight is 389.41. The tablets are yellow, film-coated, and almond-shaped, and are produced in 5, 10, or 20mg doses.
buy cheap viagra online (http://buy-cheap-viagra-online.bestinop.org)
buy cheap viagra online (http://buy-cheap-viagra-online.nemnoga.org)
gambling casino (http://gambling-casino.vernulsa.com)
online gambling casino (http://online-gambling-casino.porapahat.com)
black jack online (http://black-jack-online.vernulsa.com)
Contents [hide]
1 Cialis at work
3 Side effects
online gambling casino (http://online-gambling-casino.vernulsa.com)+826.11083984375

[bens_dad]

Tony, do you want to remove this spam ? http://fanf.livejournal.com/64303.html?thread=245551#t245551