Author: Adam Funk Date: To: exim-users Subject: Re: [exim] Adding missing Message-Id header for Outlook
2003(AUTHENTICATED) users
> Because Exim is inherently a general MTA->MTA delivery engine and cannot > accurately on its own determine when it is receiving a message from
> a MUA or another MTA,
Why isn't that true of any MTA (not just Exim)?
> it was left to the end-user to configure the
> system to explicitly enable submission mode when an MUA was identified
> as submitting the message (i.e. SMTP AUTH, local IP space, MSA interface, etc.)
>
> In general, it is a bad idea (although I don't believe against spec)
> to add a missing message-id for messages originating from a foreign source.
Of course you don't want to add your own domain's message-id to any
spam (or other bad e-mail) that you accidentally relay -- but isn't
the message-id the least of your worries? Why else is adding the
message-id a bad idea?
