Collaborate Disseminate
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
I am setting up dmarc and receiving reports.
Part of the report includes the IP address of my centos cpanel server which fails dkim and spf.
<source_ip>123.45.67.89</source_ip>
<count>1</count>
&… Continue reading Are spf and dkim necessary for a server IP address?
I can’t seem to find any record of SPF or DMARC in the original messages coming from gmail to my mail server.
Does gmail use SPF or DMARC when sending messages outside of gmail?
Continue reading Does gmail use SPF or DMARC when sending messages outside of gmail?
The domain abc.co.uk, has registered MX records, found through dig, mx1.forwardemail.net and mx2.forwardemail.net.
dig abc.co.uk MX +noall +answer
abc.co.uk. 300 IN MX 10 mx1.forwardemail.net.
abc.co.uk. 300 IN MX 20 mx2.for… Continue reading How attacker creates fake email accounts when the domain is using 3rd party email forwarding services [closed]