Re: SPF interoperability question

Udo Rader wrote:
> Hmm, I don't agree. These days SPF is mostly used in policy servers and
> mail not originating the specified hosts will get a higher spam score.
>

I didn't see this. People blocking because of lack of SPF are responsible for misclassification of mail to their users. As a sender, I don't care.
After all, some people use very aggressive DNSBLs....

Few tests involving gmail, yahoo and hotmail didn't show noticeable benefits from SPF records.

> So having SPF records won't benefit _you_ much but will 'help' other
> sites detecting if mails allegedly originating from your domain are sent
> out via the "correct" servers. It will 'help', but certainly must not be
> the only criteria.
>

That doesn't help much as long as there are zillions of domains without SPF records and zombie clients to post from.

Anyway, if you reread the OP post, you'll see that he allows sending from multiple IPs. If the number of these IPs is manageable, then he can add an SPF record. IF the number is too large or if it changes too often, then he'd better not add one.

> We have B) in place and it did not hurt us or any of our customers
> either so far :-)
>

yes, if you add records, then go for B. Received on Tue Jul 31 11:25:33 2007

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