Phishers taking advantage of Gmail’s SMTP relay service to impersonate brands Your email has been sent As the number of malware and ransomware attacks continue to become more prevalent, cybersecurity ...

Okay, here the setup I currently having running. I have a newly intsalled Exchange 2000 server running and it sends all of it's SMTP traffic to a "smart host" that is a Win2K Server box running IIS ...

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 ...

Do you have some kind of intrusion detection with active blocking running on the network? Are connections to the SMTP server restricted (in the properties of the SMTP service)?