smtp in Network Monitoring downloads
PRTG Network Monitor
17.2.30 download... NetFlow / sFlow / jFlow. It also offers SMTP/IMAP Roundtrip-Email Monitoring and VMware Monitoring, VoIP Monitoring, Toplists ... for all common network services (e.g. PING, HTTP, SMTP, POP3, FTP, SSH etc.), allowing users to monitor ...
Server Check Monitoring System
1.5 download... monitors your websites and other internet-based services (Ping, SMTP, IMAP, FTP, etc.) and makes sure you're the ... common protocols, including HTTP & HTTPS, Ping, FTP, SMTP, POP3, IMAP, TCP, MySQL. Monitor them all and ...