HOW MAIL TRANSFER AND RECEIVE IN MAC OS

PROCCESS RUN ON BACKGROUND

HOW MAIL TRANSFER AND RECEIVE

ON SENDER SIDE :-

1.)MUA ->> MAIL USER AGENT (THUNDER BIRD)
2.)MSP ->> MAIL SUBMISSION PROGRAM (SEND MAIL/POSTFIX/EXCHANGE SERVER)
3.)MTA ->> MAIL TRANSPORT AGENT (SMTP)
4.)MDA ->> MAIL DELIVERY AGENT (IMAP)

ON RECIEVING END :-

1.)MDA ->> MAIL DELIVERY AGENT (ON TARGET RECEIVE PACKETS)
2.)MRA ->> MAIL RETERIVAL AGENT (POP -> RECEIVE PACKET FROM (MDA))
3.)MUA ->> MAIL USER AGENTC (DISPLAYS MAILS AFTER RECEVING PACKETS)