SMTP Mail
SMTP Mail Protocol
Detection Information
The following page provides information on the SMTP Mail Protocol.
Protocol Description
The Simple Mail Transfer Protocol (SMTP) is used for sending e-mail messages.
Full Name
Simple Mail Transfer Protocol
Abbreviation
SMTP
Introduced
Version 2.88
Best Practices
Keep an eye on the size and number of SMTP connections going through your network. If you see a spike in traffic, it could be spam or virus traffic from a malware infected system on your network.
Port Statistics
| IP Protocol | Flow Percent |
|---|---|
| TCP 25 | > 99% |
| TCP 587 | < 1% |
Port Reference - RFC
- TCP 25 - Simple Mail Transfer
Category
External Resources
Protocol Detection
Do you know how much SMTP Mail traffic flows through your network? Netify's protocol detection engine and reporting provides insights to help manage your network.
What gets measured, gets managed.
Learn MoreNetify Resources
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