屑俺日記

☆ POP before SMTPの失敗例

こないだの旧いメールクライアントで メールが送れず、sylpheedでできたはなしの続き。
Tsharkで文字に流し、適当に伏せ字にする。

一旦SMTPを試みて失敗(1-9)し、POPで認証(10-14)し、何もメールを 取らずにバイバイ(15-16)するが、もう一度SMTPを試みて やっぱり蹴られる(17-25)と。

 1  15:05:23.90 $OLD_MUA     -> $MAIL_SERVER SMTP 73 C: HELO $MYHOSTNAME
 2  15:05:23.94 $MAIL_SERVER -> $OLD_MUA     SMTP 93 S: 220 $SMTP_HOST ESMTP Postfix
 3  15:05:24.20 $MAIL_SERVER -> $OLD_MUA     SMTP 79 S: 250 $SMTP_HOST
 4  15:05:24.21 $OLD_MUA     -> $MAIL_SERVER SMTP 85 C: MAIL FROM:<$MAIL_ADDR>
 5  15:05:24.26 $MAIL_SERVER -> $OLD_MUA     SMTP 68 S: 250 2.1.0 Ok
 6  15:05:24.27 $OLD_MUA     -> $MAIL_SERVER SMTP 83 C: RCPT TO:<$MAIL_ADDR>
 7  15:05:24.31 $MAIL_SERVER -> $OLD_MUA     SMTP 128 S: 554 5.7.1 \
  <unknown[$MOB_IP]>: Client host rejected: Access denied
 8  15:05:24.32 $OLD_MUA     -> $MAIL_SERVER SMTP 60 C: QUIT
 9  15:05:24.36 $MAIL_SERVER -> $OLD_MUA     SMTP 69 S: 221 2.0.0 Bye
10  15:05:24.55 $MAIL_SERVER -> $OLD_MUA     POP 112 S: +OK Hello there.\
  <XXXX.XXXXXXXXXX@localhost.localdomain>
11  15:05:24.55 $OLD_MUA     -> $MAIL_SERVER POP  88 C: USER $POP_ACCOUNT
12  15:05:24.59 $MAIL_SERVER -> $OLD_MUA     POP  78 S: +OK Password required.
13  15:05:24.61 $OLD_MUA     -> $MAIL_SERVER POP  69 C: PASS $POP_PASS
14  15:05:24.66 $MAIL_SERVER -> $OLD_MUA     POP  70 S: +OK logged in.
15  15:05:24.67 $OLD_MUA     -> $MAIL_SERVER POP  60 C: QUIT
16  15:05:24.71 $MAIL_SERVER -> $OLD_MUA     POP  68 S: +OK Bye-bye.
17  15:05:24.84 $OLD_MUA     -> $MAIL_SERVER SMTP 73 C: HELO $MYDOMAIN
18  15:05:24.87 $MAIL_SERVER -> $OLD_MUA     SMTP 93 S: 220 $SMTP_HOST ESMTP Postfix
19  15:05:25.14 $MAIL_SERVER -> $OLD_MUA     SMTP 79 S: 250 $SMTP_HOST
20  15:05:25.15 $OLD_MUA     -> $MAIL_SERVER SMTP 85 C: MAIL FROM:<$MAIL_ADDR>
21  15:05:25.19 $MAIL_SERVER -> $OLD_MUA     SMTP 68 S: 250 2.1.0 Ok
22  15:05:25.20 $OLD_MUA     -> $MAIL_SERVER SMTP 83 C: RCPT TO:<$MAIL_ADDR>
23  15:05:25.24 $MAIL_SERVER -> $OLD_MUA     SMTP 128 S: 554 5.7.1 \
  <unknown[$MOB_IP]>: Client host rejected: Access denied
24  15:05:25.25 $OLD_MUA     -> $MAIL_SERVER SMTP 60 C: QUIT
25  15:05:25.30 $MAIL_SERVER -> $OLD_MUA     SMTP 69 S: 221 2.0.0 Bye

普通に通るMUAならこんな感じ。SMTPのみ。

 1  14:54:37.44 $MAIL_SERVER -> $MY_MUA      SMTP 105 S: 220 $SMTP_HOST ESMTP Postfix
 2  14:54:37.44 $MY_MUA      -> $MAIL_SERVER SMTP 80 C: EHLO $MYHOSTNAME
 3  14:54:37.50 $MAIL_SERVER -> $MY_MUA      SMTP 250 S: 250 $SMTP_HOST | \
  250 PIPELINING | 250 SIZE 10240000 | 250 VRFY | 250 ETRN | 250 STARTTLS | \
  250 AUTH DIGEST-MD5 CRAM-MD5 PLAIN LOGIN | 250 ENHANCEDSTATUSCODES | \
  250 8BITMIME | 250 DSN
 4  14:54:37.53 $MY_MUA      -> $MAIL_SERVER SMTP 81 C: AUTH CRAM-MD5
 5  14:54:37.58 $MAIL_SERVER -> $MY_MUA      SMTP 128 S: 334 \
  YYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYY==
 6  14:54:37.59 $MY_MUA      -> $MAIL_SERVER SMTP 148 C: \
  ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZ\
  ZZZZZZZZZZZZZZZZZZZZZZZZZZZ
 7  14:54:37.65 $MAIL_SERVER -> $MY_MUA      SMTP 103 S: 235 2.0.0 \
  Authentication successful
 8  14:54:37.65 $MY_MUA      -> $MAIL_SERVER SMTP 97 C: MAIL FROM:<$SENDER>
 9  14:54:37.70 $MAIL_SERVER -> $MY_MUA      SMTP 80 S: 250 2.1.0 Ok
10  14:54:37.71 $MY_MUA      -> $MAIL_SERVER SMTP 96 C: RCPT TO:<$SENDTO>
11  14:54:37.80 $MAIL_SERVER -> $MY_MUA      SMTP 80 S: 250 2.1.5 Ok
12  14:54:37.80 $MY_MUA      -> $MAIL_SERVER SMTP 72 C: DATA
13  14:54:37.84 $MAIL_SERVER -> $MY_MUA      SMTP 103 S: 354 \
  End data with <CR><LF>.<CR><LF>
14  14:54:37.84 $MY_MUA      -> $MAIL_SERVER SMTP 446 C: DATA fragment, $NUM bytes
15  14:54:38.07 $MAIL_SERVER -> $MY_MUA      SMTP 104 S: 250 2.0.0 Ok: \
  queued as $QUENAME
16  14:54:38.08 $MY_MUA      -> $MAIL_SERVER SMTP 72 C: QUIT
17  14:54:38.12 $MAIL_SERVER -> $MY_MUA      SMTP 81 S: 221 2.0.0 Bye