Answer Posted / sailabala sahoo

IMAP:-( Internet Message Accese protocol) Port No is- 143
1.imap_list : Read the list of mailboxes
2. imap_open : Opens an IMAP stream to mailbox
3.after open the mail box one copy of the mail ll be a store
in server.
POP3 (Post Office Protocal) Port no-110
1.imap_list : Read the list of mailboxes
2.imap_open : Opens an IMAP stream to mailbox
3.After open the mail there ll be nothing in server.

LDAP:- (Light weight Directory Access protocol) port no-636

1. ldap_connect : This will connect to the ldap server with
the given login credentials.
2. ldap_search : By using this command we can search in ldap
records.
3.It is faster than other database like mysql,sql,oracle
4.It can write small amount of data but read becames faster.
5.Ex: outlook express

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