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Questions tagged [spf]

Sender Policy Framework (SPF) is an email authentication method designed to detect forged sender addresses in emails (email spoofing), a technique often used in phishing and email spam.

3 votes
2 answers
592 views

What use is SPF for email security in a cloud / SAAS world

I've just set up sending emails from my domain with Google workspace, and have just learned about SPF, DKIM, and DMARC. I'm wondering, what use is SPF in the modern internet. Probably half the ...
Jesse Rizzo's user avatar
1 vote
1 answer
151 views

Using "send as" feature with gmail from custom domain not hosted by Google fails SPF and DKIM

I have my personal email address set as a "send as" option on gmail. Let's call it [email protected]. I don't use Google for any services relating to mydomain.com, so I don't have an admin ...
Adam J. Kessel's user avatar
1 vote
1 answer
853 views

Can I use multiple email providers with my website's DKIM, DMARC and SPF?

I'm a software developer, with limited Mail server setup experience, running a little side SAAS on the side where I send emails to my customers. My domain has SPF, DMARC and DKIM setup and I use ...
LePrinceDeDhump's user avatar
3 votes
1 answer
265 views

How to know whether e-mail was spoofed?

I am having a hard time understanding the different methods of e-mail verification. I know about DKIM, SPF and DMARC. If I would like to know whether an e-mail I received actually came from the e-...
LAWYLAWY's user avatar
1 vote
0 answers
313 views

Is my DMARC report saying legitmate emails are failing or illegitimate emails are passing? [closed]

I am learning how to improve email deliverability. Along the way, I'm learning about DMARC reports, SPF and DKIM. I have a friend with a small business who said I can practice with this email ...
learningtech's user avatar
6 votes
1 answer
3k views

Spoofed email sent to me from my email address with SPF/DKIM/DMARC passing

I received an email earlier today on my work email address. The email came from the same address—mine—but I didn't send it. It was an email claiming that he was a professional hacker who had hacked my ...
PaulMcF87's user avatar
  • 161
0 votes
1 answer
188 views

How can an email forwarding service send email with a "From" from a domain they don't control, and still pass SPF?

Let's say: [email protected] sends an email to [email protected]. Bob owns the domain bob.com but doesn't manage an emailing server. Instead he uses an email forwarding service (provided by his registrar /...
Basj's user avatar
  • 982
1 vote
1 answer
2k views

Still able to spoof emails with strict DMARC, SPF and DKIM enabled

Despite setting up strict DMARC, SPF, and having DKIM enabled, I am still easily able to spoof the "From" address. I can easily do this with PHPMailer on my Mac and even with some free 3rd ...
Ian W's user avatar
  • 111
0 votes
1 answer
338 views

Spoofed forwarded email? Help with analyzing of DMARC report

Why did this email get forwarded successfully? An XML report is below: I simply cannot understand the delivery status, a transcript follows: This email has been automatically forwarded. Despite the ...
Vlastimil Burián's user avatar
0 votes
0 answers
661 views

SPF passes but in Gmail, 'Show Original', top section doesn't show SPF: PASS with IP

When I send an email from my HostGator account to my Gmail account, I see in the header spf=pass... When I paste the header in this tool -> https://toolbox.googleapps.com/apps/messageheader/ It ...
Bob Aune's user avatar
0 votes
1 answer
433 views

SPF problems using my ISP's SMTP out-bound server

The spf record for my domain is: v=spf1 a:smtp.(my-isp).com ip4:(my-static-IP) -all I have recently added smtp.(my-isp).com to the spf record. I have sent some test emails to gmail where the outgoing ...
Peggy Schafer's user avatar
2 votes
1 answer
379 views

Spoofed email: whose fault is it?

My relative received an email from a bill they were expecting to pay. So they paid said bill. Only problem is: it was a spoofed email, and the real bill only came in later. I checked the email on the ...
Bersan's user avatar
  • 135
1 vote
1 answer
386 views

How do SPF and DKIM work together prevent spoofing?

I'm trying to understand how SPF and DKIM can be used to prevent email spoofing. One of the things I find confusing is that the SSID/AUID of a DKIM signed message can be different from both the ...
jay.lee's user avatar
  • 113
3 votes
0 answers
2k views

DKIM/SPF What does it mean when policy_evaluated fails but auth_results passes?

I am trying to get the DKIM and SPF settings correct for a client who uses both GSuite and WordPress to send her emails. I added this dmarc: v=DMARC1; p=none; rua=mailto:l***@******ney.com; fo=1; ...
OM4U's user avatar
  • 31
2 votes
2 answers
840 views

Flattening an SPF record - drawbacks and downsides?

I have an SPF record that has too many DNS lookups. Consequence is some mail servers will silently drop emails; RFC7028 says that over 10 lookups: SPF implementations MUST limit the total number of ...
Criggie's user avatar
  • 522

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