SPF. What happens if mailing from temp location?

[Frank_Rizzo]

I have the server correctly set up with an SPF record. Tests from that server show that all is well:

Pass - This IP is authorized to send E-mail from this domain.

But that is sending mail from the server. What happens if I send mail from my ISP account?

The ISP account is setup and authorised to send mail for [e-mail] but obviously the SPF record is not going to match.

I know that some mail gets through but I'm wondering if some systems out there would detect a Fail. What happens in that situation? Does the user get the mail, does it go into their junk folder, or is it trashed?

Basically, are all mail clients / receiving servers set up to detect SPF, and what happens if that client / server notices any of the following:

Fail - This IP is not authorized to send E-mail from this domain
SoftFail - This IP probably is not authorized to send E-mail from this domain, but the domain owners are not certain
Neutral - The domain does not know if the IP is allowed to send E-mail or not.

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In a previous message I asked how to add my ISP settings to the SPF string but the ISP does not have an SPF setting - it can't be done. So this is not a solution.

[jtara]

If your ISP does not have SPF records... first of all get a new ISP! This means that your emails sent with your ISP-provided email address may be blocked by servers that want SPF.

If that isn't practical, or you don't use your ISP-provided email, then you will have to add you ISP's mail server(s) manually to your SPF record. It probably would be best to talk to a technician at your ISP to determine all of the servers that might send mail. Otherwise, you are just guessing.

Certainly include the SMTP server that you send your mail through when using your ISP. But they may have additional relay servers that may come into play if mail backs-up, etc. So, best to talk to a technician.