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Re: RFC: Making mail-transport-agent Priority: optional

Josh Triplett <josh@joshtriplett.org> writes:
> Steve Langasek wrote:

>> Needing to send mail through specific per-user smarthosts is the
>> exception, not the rule.  Most machines have a designated forwarding
>> smarthost based on who their ISP is, not based on which email address
>> someone wants to use.

> Every ISP mailserver I've seen, and for that matter almost every other
> mailserver I've seen, requires SMTP AUTH to send mail; the SMTP AUTH
> credentials vary by user.  And for that matter, while most of those
> mailservers[1] will allow sending from email addresses other than the
> one used for SMTP AUTH, many such servers *will* prohibit sending from
> another address at the same domain/service, requiring you to SMTP AUTH
> for that address instead.

I agree with Josh here.  I think this is much more common than one might
think.  Getting people set up with an MUA that does authentication on
sending mail properly is something I've run into repeatedly when helping
users use Linux, and none of the MTAs really cut it.  I've set up
single-user Postfix installations that use the user's credentials to send
system mail, but it's a very uneasy and hard-to-maintain configuration.

Russ Allbery (rra@debian.org)               <http://www.eyrie.org/~eagle/>

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