On Mon, Oct 31, 2011 at 6:23 AM, Brian Johnson <bjohn...@drtel.com> wrote: > For clarity it's really bad for ISPs to block ports other than 25 for the > purposes of mail flow control... correct? Yes, correct. If you're using another mail submission port, you're connecting to a mail service that has the responsibility not to let spam escape, and your ISP has done its job of stopping point-source pollution.
>Bill>I've got a strong preference for ISPs to run a >Bill>Block-25-by-default/Enable-when-asked. [...] > This is, of course, exactly why this blocking is done. It looks like you're missing half my point, which is the Enable-when-asked part. There are users who are perfectly legitimately running MTAs at home, whether for reliability or privacy (e.g. so they can run SMTP-over-TLS end-to-end) or just simplicity, and ISPs shouldn't be blocking them (unless they're spammers, of course.) > My take on this is that it IS best practice to have users use the submission > port (587) for mail submission from the MUA to an MTA. If you're running an MTA service, then yes. If you're running a transport service, then not necessarily. -- ---- Thanks; Bill Note that this isn't my regular email account - It's still experimental so far. And Google probably logs and indexes everything you send it.
