SMTP
Related Words
emailprotocolserverinternetnetworkmessagetransmissionrelayportclientheaderbodyenvelopeaddressdomainhostsockettcppacketroutingdeliveryspamfilterauthenticationencryptioncertificatehandshakecommandresponsestatusqueuebouncedeferredsenderrecipientmailboxattachmentmimecharsetlatencybandwidthfirewallproxygatewaydnslookupsessiontimeoutpayloadtraffic