PostfixからSESにリレー(postfix編)の記事で紹介した設定ですが、実は、なかなか正常に動作せず、tcpdumpを利用して、SMTPを確認しながら試行錯誤していました。
実際に、下記のようなメールを送信してみます。
# sendmail -t -f suzuki@suz-lab.com suzuki@suz-lab.com FROM: suzuki@suz-lab.com TO: suzuki@suz-lab.com SUBJECT: test11 test11 .
そうすると、tcpdumpは下記のような結果になりSMTPのコマンドやレスポンスが飛び交っているのがわかると思います。
この方法で、PostfixからSESに送受信されるメッセージを確認しながら調査することができ、非常に有用でした。
# tcpdump -i lo -X port 2525 tcpdump: verbose output suppressed, use -v or -vv for full protocol decode listening on lo, link-type EN10MB (Ethernet), capture size 65535 bytes 04:27:53.779637 IP localhost.ms-v-worlds > localhost.54883: Flags [P.], seq 1:66, ack 1, win 256, options [nop,nop,TS val 209967181 ecr 209966469], length 65 0x0000: 4500 0075 1682 4000 4006 25ff 7f00 0001 E..u..@.@.%..... 0x0010: 7f00 0001 09dd d663 3268 c307 e123 ee39 .......c2h...#.9 0x0020: 8018 0100 fe69 0000 0101 080a 0c83 d84d .....i.........M 0x0030: 0c83 d585 3232 3020 656d 6169 6c2d 736d ....220.email-sm 0x0040: 7470 2e61 6d61 7a6f 6e61 7773 2e63 6f6d tp.amazonaws.com 0x0050: 2045 534d 5450 2053 696d 706c 6545 6d61 .ESMTP.SimpleEma 0x0060: 696c 5365 7276 6963 652d 3236 3338 3138 ilService-263818 0x0070: 3131 390d 0a 119.. 04:27:53.779959 IP localhost.54883 > localhost.ms-v-worlds: Flags [P.], seq 1:33, ack 66, win 257, options [nop,nop,TS val 209967181 ecr 209967181], length 32 0x0000: 4500 0054 3bc0 4000 4006 00e2 7f00 0001 E..T;.@.@....... 0x0010: 7f00 0001 d663 09dd e123 ee39 3268 c348 .....c...#.92h.H 0x0020: 8018 0101 fe48 0000 0101 080a 0c83 d84d .....H.........M 0x0030: 0c83 d84d 4548 4c4f 2069 702d 3130 2d30 ...MEHLO.ip-10-0 0x0040: 2d30 2d31 3637 2e6c 6f63 616c 646f 6d61 -0-167.localdoma 0x0050: 696e 0d0a in.. 04:27:53.957541 IP localhost.ms-v-worlds > localhost.54883: Flags [P.], seq 66:159, ack 33, win 256, options [nop,nop,TS val 209967359 ecr 209967181], length 93 0x0000: 4500 0091 1684 4000 4006 25e1 7f00 0001 E.....@.@.%..... 0x0010: 7f00 0001 09dd d663 3268 c348 e123 ee59 .......c2h.H.#.Y 0x0020: 8018 0100 fe85 0000 0101 080a 0c83 d8ff ................ 0x0030: 0c83 d84d 3235 302d 656d 6169 6c2d 736d ...M250-email-sm 0x0040: 7470 2e61 6d61 7a6f 6e61 7773 2e63 6f6d tp.amazonaws.com 0x0050: 0d0a 3235 302d 3842 4954 4d49 4d45 0d0a ..250-8BITMIME.. 0x0060: 3235 302d 5349 5a45 2031 3034 3835 3736 250-SIZE.1048576 0x0070: 300d 0a32 3530 2d41 5554 4820 504c 4149 0..250-AUTH.PLAI 0x0080: 4e20 4c4f 4749 4e0d 0a32 3530 204f 6b0d N.LOGIN..250.Ok. 0x0090: 0a . 04:27:53.957918 IP localhost.54883 > localhost.ms-v-worlds: Flags [P.], seq 33:134, ack 159, win 257, options [nop,nop,TS val 209967359 ecr 209967359], length 101 0x0000: 4500 0099 3bc1 4000 4006 009c 7f00 0001 E...;.@.@....... 0x0010: 7f00 0001 d663 09dd e123 ee59 3268 c3a5 .....c...#.Y2h.. 0x0020: 8018 0101 fe8d 0000 0101 080a 0c83 d8ff ................ 0x0030: 0c83 d8ff 4155 5448 2050 4c41 494e 2041 ....AUTH.PLAIN.X 0x0040: XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXXXXXXXXXXXXXX 0x0050: XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXXXXXXXXXXXXXX 0x0060: XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXXXXXXXXXXXXXX 0x0070: XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXXXXXXXXXXXXXX 0x0080: XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXXXXXXXXXXXXXX 0x0090: 5456 5164 6e70 4a0d 0a XXXXXXX.. 04:27:54.160231 IP localhost.ms-v-worlds > localhost.54883: Flags [P.], seq 159:191, ack 134, win 256, options [nop,nop,TS val 209967561 ecr 209967359], length 32 0x0000: 4500 0054 1686 4000 4006 261c 7f00 0001 E..T..@.@.&..... 0x0010: 7f00 0001 09dd d663 3268 c3a5 e123 eebe .......c2h...#.. 0x0020: 8018 0100 fe48 0000 0101 080a 0c83 d9c9 .....H.......... 0x0030: 0c83 d8ff 3233 3520 4175 7468 656e 7469 ....235.Authenti 0x0040: 6361 7469 6f6e 2073 7563 6365 7373 6675 cation.successfu 0x0050: 6c2e 0d0a l... 04:27:54.160308 IP localhost.54883 > localhost.ms-v-worlds: Flags [P.], seq 134:183, ack 191, win 257, options [nop,nop,TS val 209967562 ecr 209967561], length 49 0x0000: 4500 0065 3bc2 4000 4006 00cf 7f00 0001 E..e;.@.@....... 0x0010: 7f00 0001 d663 09dd e123 eebe 3268 c3c5 .....c...#..2h.. 0x0020: 8018 0101 fe59 0000 0101 080a 0c83 d9ca .....Y.......... 0x0030: 0c83 d9c9 4d41 494c 2046 524f 4d3a 3c73 ....MAIL.FROM:.SIZE=305.AUTH 0x0060: 3d3c 3e0d 0a =.. 04:27:54.337986 IP localhost.ms-v-worlds > localhost.54883: Flags [P.], seq 191:199, ack 183, win 256, options [nop,nop,TS val 209967739 ecr 209967562], length 8 0x0000: 4500 003c 1688 4000 4006 2632 7f00 0001 E..<.. d663 c3c5 e123 eeef .......c2h... fe30 da7b .....0......... d9ca ....250.ok.. ip localhost.54883> localhost.ms-v-worlds: Flags [P.], seq 183:213, ack 199, win 257, options [nop,nop,TS val 209967739 ecr 209967739], length 30 0x0000: 4500 0052 3bc3 4000 4006 00e1 7f00 0001 E..R;.@.@....... 0x0010: 7f00 0001 d663 09dd e123 eeef 3268 c3cd .....c...#..2h.. 0x0020: 8018 0101 fe46 0000 0101 080a 0c83 da7b .....F.........{ 0x0030: 0c83 da7b 5243 5054 2054 4f3a 3c73 757a ...{RCPT.TO:0x0050: 0d0a .. 04:27:54.516150 IP localhost.ms-v-worlds > localhost.54883: Flags [P.], seq 199:207, ack 213, win 256, options [nop,nop,TS val 209967917 ecr 209967739], length 8 0x0000: 4500 003c 168a 4000 4006 2630 7f00 0001 E..<.. d663 c3cd e123 ef0d .......c2h... fe30 db2d .....0.........- da7b ... ip localhost.54883> localhost.ms-v-worlds: Flags [P.], seq 213:219, ack 207, win 257, options [nop,nop,TS val 209967917 ecr 209967917], length 6 0x0000: 4500 003a 3bc4 4000 4006 00f8 7f00 0001 E..:;.@.@....... 0x0010: 7f00 0001 d663 09dd e123 ef0d 3268 c3d5 .....c...#..2h.. 0x0020: 8018 0101 fe2e 0000 0101 080a 0c83 db2d ...............- 0x0030: 0c83 db2d 4441 5441 0d0a ...-DATA.. 04:27:54.516200 IP localhost.ms-v-worlds > localhost.54883: Flags [.], ack 219, win 256, options [nop,nop,TS val 209967917 ecr 209967917], length 0 0x0000: 4500 0034 168b 4000 4006 2637 7f00 0001 E..4..@.@.&7.... 0x0010: 7f00 0001 09dd d663 3268 c3d5 e123 ef13 .......c2h...#.. 0x0020: 8010 0100 01a3 0000 0101 080a 0c83 db2d ...............- 0x0030: 0c83 db2d ...- 04:27:54.693809 IP localhost.ms-v-worlds > localhost.54883: Flags [P.], seq 207:244, ack 219, win 256, options [nop,nop,TS val 209968095 ecr 209967917], length 37 0x0000: 4500 0059 168c 4000 4006 2611 7f00 0001 E..Y..@.@.&..... 0x0010: 7f00 0001 09dd d663 3268 c3d5 e123 ef13 .......c2h...#.. 0x0020: 8018 0100 fe4d 0000 0101 080a 0c83 dbdf .....M.......... 0x0030: 0c83 db2d 3335 3420 456e 6420 6461 7461 ...-354.End.data 0x0040: 2077 6974 6820 3c43 523e 3c4c 463e 2e3c .with. . .. 04:27:54.693897 IP localhost.54883 > localhost.ms-v-worlds: Flags [P.], seq 219:527, ack 244, win 257, options [nop,nop,TS val 209968095 ecr 209968095], length 308 0x0000: 4500 0168 3bc5 4000 4006 ffc8 7f00 0001 E..h;.@.@....... 0x0010: 7f00 0001 d663 09dd e123 ef13 3268 c3fa .....c...#..2h.. 0x0020: 8018 0101 ff5c 0000 0101 080a 0c83 dbdf ............... 0x0030: 0c83 dbdf 5265 6365 6976 6564 3a20 6279 ....Received:.by 0x0040: 2069 702d 3130 2d30 2d30 2d31 3637 2e6c .ip-10-0-0-167.l 0x0050: 6f63 616c 646f 6d61 696e 2028 506f 7374 ocaldomain.(Post 0x0060: 6669 782c 2066 726f 6d20 7573 6572 6964 fix,.from.userid 0x0070: 2030 290d 0a09 6964 2045 4543 3145 4243 .0)...id.EEC1EBC 0x0080: 363b 2057 6564 2c20 3132 2053 6570 2032 6;.Wed,.12.Sep.2 0x0090: 3031 3220 3034 3a32 373a 3532 202b 3039 012.04:27:52.+09 0x00a0: 3030 2028 4a53 5429 0d0a 4652 4f4d 3a20 00.(JST)..FROM:. 0x00b0: 7375 7a75 6b69 4073 757a 2d6c 6162 2e63 suzuki@suz-lab.c 0x00c0: 6f6d 0d0a 544f 3a20 7375 7a75 6b69 4073 om..TO:.suzuki@s 0x00d0: 757a 2d6c 6162 2e63 6f6d 0d0a 5355 424a uz-lab.com..SUBJ 0x00e0: 4543 543a 2074 6573 7431 310d 0a4d 6573 ECT:.test11..Mes 0x00f0: 7361 6765 2d49 643a 203c 3230 3132 3039 sage-Id:...Da 0x0130: 7465 3a20 5765 642c 2031 3220 5365 7020 te:.Wed,.12.Sep. 0x0140: 3230 3132 2030 343a 3237 3a31 3520 2b30 2012.04:27:15.+0 0x0150: 3930 3020 284a 5354 290d 0a0d 0a74 6573 900.(JST)....tes 0x0160: 7431 310d 0a2e 0d0a t11..... 04:27:55.090844 IP localhost.ms-v-worlds > localhost.54883: Flags [P.], seq 244:313, ack 527, win 265, options [nop,nop,TS val 209968492 ecr 209968095], length 69 0x0000: 4500 0079 168e 4000 4006 25ef 7f00 0001 E..y..@.@.%..... 0x0010: 7f00 0001 09dd d663 3268 c3fa e123 f047 .......c2h...#.G 0x0020: 8018 0109 fe6d 0000 0101 080a 0c83 dd6c .....m.........l 0x0030: 0c83 dbdf 3235 3020 4f6b 2030 3030 3030 ....250.Ok.00000 0x0040: 3133 3962 3663 6435 3961 652d 6239 6332 139b6cd59ae-b9c2 0x0050: 3433 6533 2d38 6433 382d 3466 3662 2d62 43e3-8d38-4f6b-b 0x0060: 6239 642d 6231 3031 6365 3132 3536 6336 b9d-b101ce1256c6 0x0070: 2d30 3030 3030 300d 0a -000000.. 04:27:55.091017 IP localhost.54883 > localhost.ms-v-worlds: Flags [P.], seq 527:533, ack 313, win 257, options [nop,nop,TS val 209968492 ecr 209968492], length 6 0x0000: 4500 003a 3bc6 4000 4006 00f6 7f00 0001 E..:;.@.@....... 0x0010: 7f00 0001 d663 09dd e123 f047 3268 c43f .....c...#.G2h.? 0x0020: 8018 0101 fe2e 0000 0101 080a 0c83 dd6c ...............l 0x0030: 0c83 dd6c 5155 4954 0d0a ...lQUIT.. 04:27:55.269588 IP localhost.ms-v-worlds > localhost.54883: Flags [P.], seq 313:322, ack 534, win 265, options [nop,nop,TS val 209968671 ecr 209968492], length 9 0x0000: 4500 003d 1691 4000 4006 2628 7f00 0001 E..=..@.@.&(.... 0x0010: 7f00 0001 09dd d663 3268 c43f e123 f04e .......c2h.?.#.N 0x0020: 8018 0109 fe31 0000 0101 080a 0c83 de1f .....1.......... 0x0030: 0c83 dd6c 3232 3120 4279 650d 0a ...l221.Bye..
これは、ELB関連の調査でも重宝していました。
