Similar to SMTPS
MIME
MIME
Quoted-printable
Quoted-printable
STARTTLS
Opportunistic TLS
Datagram Congestion Control Protocol
Datagram Congestion Control Protocol
Application-Layer Protocol Negotiation
Application-Layer Protocol Negotiation
Datagram Transport Layer Security
Datagram Transport Layer Security
Base64
Base64
DKIM
DomainKeys Identified Mail
Exchange ActiveSync
Exchange ActiveSync
Post Office Protocol
Post Office Protocol
Sender Policy Framework
Sender Policy Framework
SMTP
Simple Mail Transfer Protocol
UTF-7
UTF-7
10.5インチiPad Pro
Exterior Gateway Protocol
Exterior Gateway ProtocolBinHex
BinHex
Border Gateway Protocol
Border Gateway Protocol
CAST-128
CAST-128
CAST-256
CAST-256
Comma-Separated Values
Comma-separated valuesCommon Management Information Protocol
Common Management Information Protocol
DIAMETER
Diameter (protocol)Endpoint Handlespace Redundancy Protocol
Endpoint Handlespace Redundancy Protocol
Extended Validation 証明書
Extended Validation Certificate
HTTP cookie
HTTP cookie
Interactive Connectivity Establishment
Interactive Connectivity Establishment
Internationalized Resource Identifier
Internationalized Resource Identifier
Internet Control Message Protocol
Internet Control Message Protocol