Security researchers have found inconsistencies in how some Simple Mail Transfer Protocol (SMTP) servers handle end-of-data sequences. This allows the injection of SMTP commands into email messages in ...

Microsoft has launched High Volume Email for Exchange Online in public preview, with free access until May 2026 for organizations sending high-volume email.

I'm trying to get my SMTP communications working with my exchange server and my DAS units. It seems that when trying to send a test it fails but using then same IP,username,password,email addresses ...

Phishing actors abuse Google's SMTP relay service to bypass email security products and successfully deliver malicious emails to targeted users. According to a report from email security firm Avanan, ...

My school blocks pretty much everything. I can do ports 21, 22(?), 23, 6667, 80, 8080, and probably a few others that I haven't tried.<BR><BR>I wouldn't mind so much, but the school blocks outside ...