最後更新: 2024-02-16

 

目錄

• imap
• pop3
• smtp

 

---

imap

 

# Login:

1 login user_name password

1 OK [CAPABILITY IMAP4rev1 LITERAL+ SASL-IR LOGIN-REFERRALS ID ENABLE IDLE SORT SORT=DISPLAY 
    THREAD=REFERENCES THREAD=REFS MULTIAPPEND UNSELECT CHILDREN NAMESPACE 
UIDPLUS LIST-EXTENDED I18NLEVEL=1 CONDSTORE QRESYNC ESEARCH ESORT SEARCHRES WITHIN CONTEXT=SEARCH 
    LIST-STATUS QUOTA ACL RIGHTS=texk] Logged in

# Logout:

. logout

# 查看有什麼 Folder:

2 list "" "*"

* LIST (\HasNoChildren) "." "Trash"
* LIST (\HasNoChildren) "." "Junk"
* LIST (\HasNoChildren) "." "Sent"
* LIST (\HasNoChildren) "." "Drafts"
* LIST (\HasNoChildren) "." "INBOX"
2 OK List completed.

# 查看某 Folder 內的 sub-folder:

3 list "backup" "*"

* LIST (\HasChildren) "/" "backup"
* LIST (\HasNoChildren) "/" "backup/F2"
* LIST (\HasNoChildren) "/" "backup/F1"
3 OK List completed.

# 查看某 Folder 資訊:

4 status INBOX (messages)

* STATUS "INBOX" (MESSAGES 1)
4 OK Status completed.

. status INBOX (unseen)

# 建立,刪除,rename Folder:

. create INBOX.test3

. delete INBOX.test3

. rename INBOX.test1 INBOX.test3

# 進入某 Folder:

. select INBOX.test2

# Subscribe:

. lsub "" "*"

. subscribe INBOX.test3
. OK Completed

. unsubscribe INBOX.test3
. OK Completed

# Finding messages

. SEARCH FROM "[email protected]" BEFORE 1-Nov-2009

. SEARCH FROM "[email protected]" SINCE 4-May-2017

# TO "<mailaddress>"
# SUBJECT <string>
# BODY <string>

# Fetching messages

BODY[TEXT]        # Just the mail body, without the headers
BODY[HEADER]    # The mail headers
FLAGS                 # Flags set for the message
UID                     # The UID of the message (N)

. FETCH 817 FLAGS
* 817 FETCH (FLAGS (\Answered \Deleted \Seen))

# Set flag

a STORE 22 +FLAGS \Deleted   set as deleted email 22 (twenty-second email)
a STORE 22 -FLAGS \Deleted   restore, undelete ... email n. 22 in mailbox

# Bulk set flag

a STORE 1:* +FLAGS \Seen     set read all emails
a STORE 1:* -FLAGS \Seen     set unread all emails
a STORE 10:100 +FLAGS \Seen  set as read emails from 10 to 100(sequence number range)

 * 所有數字都可以用 "." 代替

其他:

. capability

. getquotaroot inbox

. getacl inbox

Remark:

IMAP has no built in move command, when you move a message you actually copy it to another folder and then delete the original.

imap 成功 login 後不會 move new/ 內的 file 到 cur/

 

---

POP3

 

USER userid

+OK

PASS password

+OK Logged in.

STAT

# Returns total number of messages and total size

+OK 4 1196

LIST

# Lists all messages: Returns indexed list of messages, along with size

+OK 4 messages:
1 299
2 299
3 299
4 299
.

RETR N

Return-Path: <s@a>
X-Original-To: r@b
Delivered-To: r@b
Received: from FromServer (x.ctinets.com [x.x.x.x])
        by server (Postfix) with SMTP id 9765D40D73DE
        for <r@b>; Wed, 26 Oct 2016 10:43:48 +0800 (HKT)

test msg
.

DELE N

+OK Marked to be deleted.

RSET

resets any messages previously marked for deletion in this session so that the QUIT command will not delete them.

TOP

Retrieving part of the message

# Return headers only:

TOP 1 0

# Return headers and first 10 lines of body:

TOP 1 10

QUIT

+OK Logging out, messages deleted.

ID 與 mail 的對應:

uidl

+OK
1 00000001581017bb
2 00000002581017bb
3 00000003581017bb
4 00000004581017bb

Remark

pop3 成功 login 後, 所有在 new/ 內的 file (不論是否 mail) 都會移到 cur/

---

smtp test login

 

# gen login name

perl -MMIME::Base64 -e 'print encode_base64("datahunter\@datahunter.org");'

# gen password

perl -MMIME::Base64 -e 'print encode_base64("password");'

測試:

telnet <mail_server> 25

# EHLO 在 postfix 上是沒有 log 的

C: EHLO mailserver.com

C: AUTH LOGIN

S: 334 VXNlcm5hbWU6;

C: <早前 gen 的 login name>

S: Now the server should have returned 334 UGFzc3dvcmQ6;

C: <早前gen password>

# login 成功了後都是沒有 log 的

S: 235 2.7.0 Authentication successful

# login fail 才有 log 內有 "warning: unknown[192.168.123.200]: SASL LOGIN authentication failed: UGFzc3dvcmQ6"

# 成功的 log 要交了 "mail from:" 及 "rcpt to:" 後才出

0311F3019: client=unknown[x.x.x.x], sasl_method=LOGIN, [email protected]

 

進階

Mail Body

Message-ID: <1>
Date: Fri, 23 Feb 2024 14:48:28 +0800
To: a@a
From: b@b
Subject: test

test msg

沒有 Message-ID 及 Date 很易被當成 SPAM

其他 mail header

Content-Type: text/html; charset=UTF-8
Content-Transfer-Encoding: 8bit