Collaborate Disseminate
I have an account within an organisation that provides e-mail-services within their infrastructure. These can be connected to via IMAP/SMTP and Exchange and always require password authentication. Today I learned that when I change the Fro… Continue reading Is it acceptable/common for an SMTP server to not verify the From-Address of authenticated users?
I’m using Apache Airflow and I was troubleshooting built-in smtp setup. A mass email occurred on "ops@myexample.com". It was used as a "From:" email in a mass email attack.
Chronology: Started docker by running an exten… Continue reading Malicious Mass Email Attack Occurred, Do I Still Have Problem?
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 SMTP server was smtp.(my-isp).com but … Continue reading SPF problems using my ISP’s SMTP out-bound server
How can I send an email with a spoofed ‘from’ field with nodemailer and SMTP? I know that SMTP does not provide any authentication check to see if the ‘from’ field is actually correct, so why is it not as easy as just changing the ‘from’ h… Continue reading Send spoofed email with nodemailer
Assuming I am creating an online service that allows my clients to send email (using their SMTP credentials), what risks should I consider and how to prevent them?
The sender of the emails will always be the username of the SMTP credential… Continue reading Risks sending emails with my servers using clients’ SMTP credentials
I was surprised to see that the French cybersecurity agency tolerates an SMTP relay server in the DMZ (which collects emails received from the Internet) to reach the Email server in the LAN.
In my opinion, the relay SMTP server in the DMZ … Continue reading Why it is so widely tolerated to allow SMTP server in DMZ to initiate connection to the LAN
I am trying to send an e-mail via Windows Powershell ISE using Office365’s hosting server, on behalf of another user which is specified in FROM part of the code using. But when I try to do this, I get: "STOREDRV.Submission.Exception:S… Continue reading Bypassing Office365 Server Send As Denial
I would like to know is this possible to spoof the profile picture in a spoofed email.
I’m learning email spoofing with php. I can spoof the headers like from , reply-to but I can’t find any way to add profile picture (avatar) for that mai… Continue reading Email spoofing with custom profile picture [closed]
While pundits routinely predict the end of e-mail, we still get a ton of it and we bet you do too. E-mail has been around for a very long time …read more Continue reading Ask Hackaday: Is Bigger (E-mail) Better?
Here’s something I’ve struggled to comprehend since I first heard about e-mails long ago.
Why would e-mails "bounce around" from server to server until received at the final destination, allowing those to snoop on my messages/fil… Continue reading Why does e-mail (SMTP) "bounce around" e-mails instead of just connecting directly? (Does it even still?) [closed]