EXPN Mail Server Detection Scanner
You can detect mail server using this tool.
Short Info
Level
Low
Type
Single Scan
Can be used by
Everyone
Estimated Time
5 sec
Scan only one
Domain, Ipv4
Parent Category
EXPN Mail Server Detection Scanner Detail
The SMTP "EXPN" command allows you to expand a mailing list or alias, to see where mail addressed to the alias actually goes. For example, many organizations alias postmaster to root, so that mail addressed to postmaster will get delivered to the system administrator.
An attacker might use the disclosed information to harvest specific security vulnerabilities for the application identified.
Try it yourself,
control security posture
control security posture