On Fri, Apr 17, 2020 at 07:59:01PM -0500, Derek Martin wrote: > On Fri, Apr 17, 2020 at 02:24:22PM -0400, Remco Rijnders wrote: > > The Message-ID that mutt generates is supposed to be unique. Up till now > > mutt would generate this ID based on the current date and time, followed by > > ".G". followed by a letter A to Z (A for the 1st and 27th email sent, Z for > > the 26th, etc.), followed by the pid of the active mutt process, followed > > by "@" and the configured hostname. > > This is utterly pointless. This may come off as harsh but please > understand that's not intended. I just want to be completely clear > hee so there is no misunderstanding or equivocation. > > None of the information you just listed is sensitive, and almost all > of it is already REQUIRED to be present in the message: > > - The "hostname" is usually the sender's domain, not their actual > hostname, unless left unconfigured in Mutt. Regardless of which > thing it is, it's going to be all over the message headers for the > vast majority of Mutt users. In those cases when it won't, the > user's IP address will be in them at least once (and might be > anyway, depending on how the user emits mail into the SMTP ether > and who it is talking to). REQUIRED.
Nope, hostname it is, even if you're using built-in smtp.
