All Questions
4
questions
1
vote
1
answer
267
views
Authorizing 3rd Party Envelope Sender to Impersonate Header Sender
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 ...
- 11
2
votes
2
answers
744
views
Do fowarded emails retain DMARC protection?
Assume I ask someone to create a filter in their Gmail account that automatically forwards certain emails to my inbox. If the original email was protected with DMARC, would the forwarded email also be ...
- 151
1
vote
1
answer
3k
views
SPF/DMARC for shared email provider (gmail) - how did this email pass SPF?
We recently received an email from a self described "white hat hacker" purporting to be from our own organization.
According to the mail headers, spf, dmarc, dkim and arc all passed okay and ...
- 113
1
vote
2
answers
330
views
SPF, DKIM and DMARC - How do receiving/recipient mail servers know how and when to validate the mail?
I have spent a bit of time researching SPF, DKIM and DMARC mechanisms however If I understand correctly, these help the recipient to confirm whether the domain is legitimate but only if they have ...
- 13