Collaborate Disseminate
I have set adkim=s and aspf=s, the DMARC check on mxtoolbox.com passes all tests. However, I’m using the default DKIM from microsoft, so from my understanding DMARC should fail since the alignment check with DKIM should fail. However, it p… Continue reading Why is DMARC Passing, when it seems like there is no alignment?
Rewriting for clarity:
This is regarding emails send from a 3rd party marketer spoofing one of our email addresses in the message header from field. In these emails the envelope sender would come from "noreply@marketingfirm.example&q… Continue reading Authorizing 3rd Party Envelope Sender to Impersonate Header Sender
A few companies I know say they have a DMARC record for email domain set up as a CNAME record and not a TXT record after I told them that their missing DMARC. Is there a way I can validate this externally?
I know mxtoolbox.com provides a w… Continue reading Can I check if domain has DMARC setup as CNAME record
I am trying to figure out how this one phishing email (used our Company’s domain as from) was able to bypass the O365 Spamfilter.
Looking at the Header it looks like they passed the DKIM even though the Domain that is used differs complete… Continue reading How did the email pass DKIM?
I’m sending emails via the Ionos mail servers.
I’ve got spf set up, but dmarc still fails.
This seems related to: Why is DMARC failing when SPF and DKIM are passing?
But I can’t figure out how to fix it.
My dns records:
TXT @ "v=… Continue reading How to fix DMARC alignment failure
This mail that got through has me stumped. It appeared to me as being from PayPal <unclaimedproperty@paypal.com> in my Inbox. I happened to look at the original and it says SPF, DKIM and DMARC all passed.
If I’m reading this right,… Continue reading How did this paypal spoof email pass SPF, DKIM and DMARC
I am trying to identify, why some of my e-mails are being marked as spam by recipients, and have therefore set up SPF and DKIM. In order to check that they can be verified, I set up aggregated DMARC reports.
When looking at one report, I c… Continue reading DMARC aggregated report SPF domain field
In this interview with Help Net Security, Alexander Garcia-Tobar, CEO at Valimail, explains the importance of implementing DMARC, as email is still greatly used by cybercriminals to infiltrate and attack organizations. Email has been and still is one o… Continue reading Implementing DMARC to eliminate phishing emails
I am testing my mail server setup with this tool https://email-test.had.dnsops.gov/ and I am getting suspicious that the tool may not be working right.
From what I understand it reports that my alignment check fails. I do not understand wh… Continue reading Rejected because of DKIM check fail; alignment check fail
I have the following SPF record:
v=spf1 include:_spf.mailspamprotection.com include:_spf.google.com ip4:209.85.220.0/24 ~all
Although I have included _spf.mailspamprotection.com in my SPF record, which includes ip4:146.66.121.0/24, I get … Continue reading Unknown Cause of SPF Fail