LMTP – Local Mail Transfer Protocol
MTESC – Mail Transport Equipment Service Center
LMMP – Local Mobility Management Protocol
LURP – Local URL Resolution Protocol
MTA – Mail Transport Agent
MTP – Mail Transport Protocol
MTE – Mail Transport Equipment
XMTP – XML Mail Transport Protocol
BSMTP – Batched Simple Mail Transport Protocol
LGKP – Local Group Keying Protocol
MTAM – Mail Transport Agents Mail
MTEC – Mail Transport Equipment Center
QMTP – Quick Mail Transport Protocol
SMTP – Single Mail Transport Protocol
SMTP – Standard Mail Transport Protocol
ESMTP – Extended Simple Mail Transport Protocol
Smtp – Simple Mail Transport Protocol
ldap – Local Directory Access Protocol
lgop – Local Government Operations Protocol
LAT – Local Area Transport protocol