[Gllug] Confusion about the "Sender" field in email headers.

[Walter Stanish]

>>SPF records are not *required* but really do help to get mail delivered.
>
> They also help to get it _not_ delivered in all kinds of perfectly
> sensible setups where you happen not to be sending mail via your
> organisation's mail servers, unless you are suggesting a straight +all
> or ?all.

This is true.

There's a more specific list of issues with SPF on the wiki link I included.

However, if anyone is on a setup that can be SPF configured, I would
encourage you to try it, since in my experience (which includes running
commercial and personal mail through 'SMTP badlands' such as mainland
China) I've found that it does in fact help.

- Walter
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