- Simple Mail Transfer Protocol: a protocol for transferring email messages over the Internet.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for smtp
The attackers used a little-documented feature of most basic email (SMTP) servers called an “open relay.”Your Refrigerator Is Vulnerable to a Cyberattack
January 23, 2014
- simple mail transfer protocol: a protocol that enables e-mails to be sent between different servers
- Short for Simple Mail Transfer Protocol. A protocol used on TCP/IP networks governing the transfer of e-mail.
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