SMTP Mail Protocol
The following page provides information on the SMTP Mail Protocol.
The Simple Mail Transfer Protocol (SMTP) is used for sending e-mail messages.
Simple Mail Transfer Protocol
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.
- TCP 25 - SMTP mail port.
- TCP 465 - Secure SMTP mail port.
- TCP 587 - SMTP mail message submission port.
Related ProtocolsA list of related protocols is below. List of all protocols.
|Secure POP Mail||Details|
|Secure SMTP Mail||Details|
|Secure IMAP Mail||Details|
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.
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