mail serverの移行（その46）Postfix、Dovecotの再構築

ローカルからのメールが送れないのに、迷惑メールはやって来る。
困ったものである。

ローカルは絶対に通す！と勢い込んでいたのだが、

smtpd_helo_restrictions =
    permit_mynetworks
    reject_invalid_helo_hostname
    reject_non_fqdn_helo_hostname
    reject_unknown_helo_hostname
smtpd_helo_required = yes

smtpd_helo_restrictions =

permit_mynetworks

reject_invalid_helo_hostname

reject_non_fqdn_helo_hostname

reject_unknown_helo_hostname

smtpd_helo_required = yes

smtpd_helo_restrictionsは、上の最終行smtpd_helo_required = yesが無いと動かないのだそうだ。
『Postfix Configuration Parameters』を一所懸命（Google先生が）翻訳して気が付いた。（そうだったのかぁ〜）

さて、それでもopensslで接続した結果が、

% openssl s_client -connect mail.k-in.co.jp:25
Connecting to 192.168.0.35
CONNECTED(00000005)
407BD051F87F0000:error:0A00010B:SSL routines:tls_validate_record_header:wrong version number:ssl/record/methods/tlsany_meth.c:81:
---
no peer certificate available
---
No client certificate CA names sent
---
SSL handshake has read 5 bytes and written 333 bytes
Verification: OK

% openssl s_client -connect mail.k-in.co.jp:25

Connecting to 192.168.0.35

CONNECTED(00000005)

407BD051F87F0000:error:0A00010B:SSL routines:tls_validate_record_header:wrong version number:ssl/record/methods/tlsany_meth.c:81:

---

no peer certificate available

---

No client certificate CA names sent

---

SSL handshake has read 5 bytes and written 333 bytes

Verification: OK

な訳で、またネット検索です。
見つけました。『SMTP fail to send email due to SSL wrong version number』に在りました。
『port 25じゃなくて587じゃね？』と云う返答。
そうだったのかぁ〜！
何時迄経っても一向に進まない訳が判りました。
で、早速遣ってみた。

% openssl s_client -connect mail.k-in.co.jp:587
Connecting to 192.168.0.35
CONNECTED(00000005)
depth=2 C=US, ST=New Jersey, L=Jersey City, O=The USERTRUST Network, CN=USERTrust RSA Certification Authority
verify return:1
depth=1 C=JP, ST=Tokyo, L=Shibuya-ku, O=Nijimo K.K., CN=FujiSSL SHA2 Domain Secure Site CA
verify return:1
depth=0 CN=mail.k-in.co.jp
verify return:1
---
Certificate chain
 0 s:CN=mail.k-in.co.jp
   i:C=JP, ST=Tokyo, L=Shibuya-ku, O=Nijimo K.K., CN=FujiSSL SHA2 Domain Secure Site CA
   a:PKEY: rsaEncryption, 2048 (bit); sigalg: RSA-SHA256
   v:NotBefore: Nov 13 00:00:00 2024 GMT; NotAfter: Dec 14 23:59:59 2025 GMT
 1 s:C=JP, ST=Tokyo, L=Shibuya-ku, O=Nijimo K.K., CN=FujiSSL SHA2 Domain Secure Site CA
   i:C=US, ST=New Jersey, L=Jersey City, O=The USERTRUST Network, CN=USERTrust RSA Certification Authority
   a:PKEY: rsaEncryption, 2048 (bit); sigalg: RSA-SHA384
   v:NotBefore: May 15 00:00:00 2019 GMT; NotAfter: May 14 23:59:59 2029 GMT
 2 s:C=US, ST=New Jersey, L=Jersey City, O=The USERTRUST Network, CN=USERTrust RSA Certification Authority
   i:C=GB, ST=Greater Manchester, L=Salford, O=Comodo CA Limited, CN=AAA Certificate Services
   a:PKEY: rsaEncryption, 4096 (bit); sigalg: RSA-SHA384
   v:NotBefore: Mar 12 00:00:00 2019 GMT; NotAfter: Dec 31 23:59:59 2028 GMT
 3 s:C=GB, ST=Greater Manchester, L=Salford, O=Comodo CA Limited, CN=AAA Certificate Services
   i:C=GB, ST=Greater Manchester, L=Salford, O=Comodo CA Limited, CN=AAA Certificate Services
   a:PKEY: rsaEncryption, 2048 (bit); sigalg: RSA-SHA1
   v:NotBefore: Jan  1 00:00:00 2004 GMT; NotAfter: Dec 31 23:59:59 2028 GMT
---
Server certificate
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----
subject=CN=mail.k-in.co.jp
issuer=C=JP, ST=Tokyo, L=Shibuya-ku, O=Nijimo K.K., CN=FujiSSL SHA2 Domain Secure Site CA
---
No client certificate CA names sent
Peer signing digest: SHA256
Peer signature type: RSA-PSS
Server Temp Key: X25519, 253 bits
---
SSL handshake has read 6158 bytes and written 413 bytes
Verification: OK
---
New, TLSv1.3, Cipher is TLS_AES_256_GCM_SHA384
Protocol: TLSv1.3
Server public key is 2048 bit
This TLS version forbids renegotiation.
Compression: NONE
Expansion: NONE
No ALPN negotiated
Early data was not sent
Verify return code: 0 (ok)
---
---
Post-Handshake New Session Ticket arrived:
SSL-Session:
    Protocol  : TLSv1.3
    Cipher    : TLS_AES_256_GCM_SHA384
    Session-ID: 27A41F2F35690D4851866C751FE4333642DCA68E779E249790F7AD884C898D5B
    Session-ID-ctx: 
    Resumption PSK: D652AA60566D7DC762AF56717D6595FE703C1F81F948B5473668DA6C4A802EAA92F6BA7C3E7B87B75EB5E1F9289B177C
    PSK identity: None
    PSK identity hint: None
    SRP username: None
    TLS session ticket lifetime hint: 7200 (seconds)
    TLS session ticket:
    0000 - d2 61 e6 7a c8 a6 fa d3-e3 db 6d 47 4a f7 c2 66   .a.z......mGJ..f
    0010 - 38 8f 11 7f b8 4f a9 6c-42 27 0c a5 bf d6 19 62   8....O.lB'.....b
    0020 - 2e d9 91 ca d7 7a d5 08-8d 67 e6 60 5f b8 6f ab   .....z...g.`_.o.
    0030 - cd b5 ee d1 f0 b9 96 49-74 49 89 8d 98 cf d3 fc   .......ItI......
    0040 - 54 84 e6 9e 05 2e a3 eb-ed 1d a5 91 ca 8d 3b a5   T.............;.
    0050 - ae 50 44 ae b6 86 9e 90-1e 0e c9 59 00 e9 06 fd   .PD........Y....
    0060 - 8d fa e8 60 6a 83 22 19-a1 05 80 8c c3 41 02 84   ...`j."......A..
    0070 - 66 9a 37 df 11 16 a1 ec-8d a1 ad 42 7c 2c 28 ca   f.7........B|,(.
    0080 - 5e 1d da b0 f2 11 8b 4a-4b b5 84 f3 d2 d4 27 5f   ^......JK.....'_
    0090 - d3 ce 62 e3 0b 85 51 b6-04 d6 3f 6d 59 fe 5b 59   ..b...Q...?mY.[Y
    00a0 - 61 cd a2 1f 32 9b ba ec-a6 ed db 3e e4 42 9f 6b   a...2......>.B.k
    00b0 - 88 37 5d bb 25 7c 52 52-71 74 d0 9c 29 29 7e 0e   .7].%|RRqt..))~.
    00c0 - 06 8b 2d a0 72 8a 96 e4-65 60 10 9b 72 0c 84 82   ..-.r...e`..r...

    Start Time: 1733211916
    Timeout   : 7200 (sec)
    Verify return code: 0 (ok)
    Extended master secret: no
    Max Early Data: 0
---
read R BLOCK
220 mail.k-in.co.jp ESMTP Postfix
EHLO macmi2.lo.k-in.co.jp
250-mail.k-in.co.jp
250-PIPELINING
250-SIZE 10240000
250-VRFY
250-ETRN
250-AUTH PLAIN LOGIN
250-AUTH=PLAIN LOGIN
250-ENHANCEDSTATUSCODES
250-8BITMIME
250-DSN
250 CHUNKING
quit
221 2.0.0 Bye
closed

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% openssl s_client -connect mail.k-in.co.jp:587

Connecting to 192.168.0.35

CONNECTED(00000005)

depth=2 C=US, ST=New Jersey, L=Jersey City, O=The USERTRUST Network, CN=USERTrust RSA Certification Authority

verify return:1

depth=1 C=JP, ST=Tokyo, L=Shibuya-ku, O=Nijimo K.K., CN=FujiSSL SHA2 Domain Secure Site CA

verify return:1

depth=0 CN=mail.k-in.co.jp

verify return:1

---

Certificate chain

0 s:CN=mail.k-in.co.jp

i:C=JP, ST=Tokyo, L=Shibuya-ku, O=Nijimo K.K., CN=FujiSSL SHA2 Domain Secure Site CA

a:PKEY: rsaEncryption, 2048 (bit); sigalg: RSA-SHA256

v:NotBefore: Nov 13 00:00:00 2024 GMT; NotAfter: Dec 14 23:59:59 2025 GMT

1 s:C=JP, ST=Tokyo, L=Shibuya-ku, O=Nijimo K.K., CN=FujiSSL SHA2 Domain Secure Site CA

i:C=US, ST=New Jersey, L=Jersey City, O=The USERTRUST Network, CN=USERTrust RSA Certification Authority

a:PKEY: rsaEncryption, 2048 (bit); sigalg: RSA-SHA384

v:NotBefore: May 15 00:00:00 2019 GMT; NotAfter: May 14 23:59:59 2029 GMT

2 s:C=US, ST=New Jersey, L=Jersey City, O=The USERTRUST Network, CN=USERTrust RSA Certification Authority

i:C=GB, ST=Greater Manchester, L=Salford, O=Comodo CA Limited, CN=AAA Certificate Services

a:PKEY: rsaEncryption, 4096 (bit); sigalg: RSA-SHA384

v:NotBefore: Mar 12 00:00:00 2019 GMT; NotAfter: Dec 31 23:59:59 2028 GMT

3 s:C=GB, ST=Greater Manchester, L=Salford, O=Comodo CA Limited, CN=AAA Certificate Services

i:C=GB, ST=Greater Manchester, L=Salford, O=Comodo CA Limited, CN=AAA Certificate Services

a:PKEY: rsaEncryption, 2048 (bit); sigalg: RSA-SHA1

v:NotBefore: Jan 1 00:00:00 2004 GMT; NotAfter: Dec 31 23:59:59 2028 GMT

---

Server certificate

-----BEGIN CERTIFICATE-----

MIIGETCCBPmgAwIBAgIQCca73n8qxWSYjijRmc6W/TANBgkqhkiG9w0BAQsFADB1

MQswCQYDVQQGEwJKUDEOMAwGA1UECBMFVG9reW8xEzARBgNVBAcTClNoaWJ1eWEt

a3UxFDASBgNVBAoTC05pamltbyBLLksuMSswKQYDVQQDEyJGdWppU1NMIFNIQTIg

RG9tYWluIFNlY3VyZSBTaXRlIENBMB4XDTI0MTExMzAwMDAwMFoXDTI1MTIxNDIz

NTk1OVowGjEYMBYGA1UEAxMPbWFpbC5rLWluLmNvLmpwMIIBIjANBgkqhkiG9w0B

AQEFAAOCAQ8AMIIBCgKCAQEA7mErt+xJhJxKSpwrUqF2giFN+5vM0S9sNSWqqOG1

C86av+h04I9JfniVa1L3QxNEtN23ot6L90RCXikRlpV+ERo/VOZWzW56vSHdAUUU

wPwy+4A44UJmkv25wJNCjgc311s9E3TB+VSI3P3CrUjXDH4cds6Ch3HynjmSV2MX

fK2co3dVueWbHVRW7KmeFMj+p8COR3SRax0hS0KMJjVk8EHcenVdv2lpSaO5+M76

UiJFgUTD3JH97K8KliYOpML2H+xhpwYUFE+C3pjhe4IBPxRqGBYs8gOJKseaiXO+

21H0UP2WaS76tEn2Kq79IHP6glCphRsmSNj2dY163GwdxwIDAQABo4IC9jCCAvIw

HwYDVR0jBBgwFoAU5iJAT6RQqXotkzlRr7KdczbzwbAwHQYDVR0OBBYEFFnYVn30

uzoNfmxAuTAOmWSXBv9CMA4GA1UdDwEB/wQEAwIFoDAMBgNVHRMBAf8EAjAAMB0G

A1UdJQQWMBQGCCsGAQUFBwMBBggrBgEFBQcDAjBJBgNVHSAEQjBAMDQGCysGAQQB

sjEBAgJFMCUwIwYIKwYBBQUHAgEWF2h0dHBzOi8vc2VjdGlnby5jb20vQ1BTMAgG

BmeBDAECATCBhwYIKwYBBQUHAQEEezB5MEsGCCsGAQUFBzAChj9odHRwOi8vbmlq

aW1vLmNydC5zZWN0aWdvLmNvbS9GdWppU1NMU0hBMkRvbWFpblNlY3VyZVNpdGVD

QS5jcnQwKgYIKwYBBQUHMAGGHmh0dHA6Ly9uaWppbW8ub2NzcC5zZWN0aWdvLmNv

bTAaBgNVHREEEzARgg9tYWlsLmstaW4uY28uanAwggGABgorBgEEAdZ5AgQCBIIB

cASCAWwBagB3AN3cyjSV1+EWBeeVMvrHn/g9HFDf2wA6FBJ2Ciysu8gqAAABkyMp

+zQAAAQDAEgwRgIhAPm7QNpI5fJKZcIPgV+1ZcTU5rRAJhMd/ZO/Mz/pBsWVAiEA

+R4Ryc39DZv1/VzKpB3rcmEGBLg9KV/irNuYM+Vqt8wAdgDM+w9qhXEJZf6Vm1PO

6bJ8IumFXA2XjbapflTA/kwNsAAAAZMjKfr6AAAEAwBHMEUCIQDOF2uQCPl2DloH

wwYAvDjalC0tsIvJJJbGFTjn/D/amgIgJkwbpNbNN3WLYtw3HZmby2WMDp2vobNU

YDR8SNukIn8AdwAS8U40vVNyTIQGGcOPP3oT+Oe1YoeInG0wBYTr5YYmOgAAAZMj

KfrJAAAEAwBIMEYCIQCwrdwxcba4JSKMeCyd5m9ugt+7N+x6oDVbyPcr0IPkMQIh

AL/6uhLvGCWFO8Q0wypIs6HDd+JUGkrMn5zbG1aRtQjYMA0GCSqGSIb3DQEBCwUA

A4IBAQApHWLWohT6Fg7JG7DCndHrIAwTwrHIkOi5OoG1Qx2WoVJwZ3kr3j3/mT85

hodkMOMrppVuCfS4ZbNGvHlEr+Ea3QYTDC61Ocqw3c4qZPFra+jMW4nALF9fIFm4

X0AV5sSVh4Fx528u9BEIjsBL++6oqqx+H4p08IHiFRGaXyq998NehFYRh1vAEF3z

WxoN2db1OrkDpuc0+mMp61petMx3hGZtHfUtCCk0IWPzAI5y+MtdHHP/LeehGn28

91BfhDFr5iftlyj0VIrlAIymQw62mErQXm9xr4KFd3fHtiSZm2aaVcox16DfKYGq

FLSNIUk2ZnKEz/nhAhbybbhG3781

-----END CERTIFICATE-----

subject=CN=mail.k-in.co.jp

issuer=C=JP, ST=Tokyo, L=Shibuya-ku, O=Nijimo K.K., CN=FujiSSL SHA2 Domain Secure Site CA

---

No client certificate CA names sent

Peer signing digest: SHA256

Peer signature type: RSA-PSS

Server Temp Key: X25519, 253 bits

---

SSL handshake has read 6158 bytes and written 413 bytes

Verification: OK

---

New, TLSv1.3, Cipher is TLS_AES_256_GCM_SHA384

Protocol: TLSv1.3

Server public key is 2048 bit

This TLS version forbids renegotiation.

Compression: NONE

Expansion: NONE

No ALPN negotiated

Early data was not sent

Verify return code: 0 (ok)

---

Post-Handshake New Session Ticket arrived:

SSL-Session:

Protocol : TLSv1.3

Cipher : TLS_AES_256_GCM_SHA384

Session-ID: 27A41F2F35690D4851866C751FE4333642DCA68E779E249790F7AD884C898D5B

Session-ID-ctx:

Resumption PSK: D652AA60566D7DC762AF56717D6595FE703C1F81F948B5473668DA6C4A802EAA92F6BA7C3E7B87B75EB5E1F9289B177C

PSK identity: None

PSK identity hint: None

SRP username: None

TLS session ticket lifetime hint: 7200 (seconds)

TLS session ticket:

0000 - d2 61 e6 7a c8 a6 fa d3-e3 db 6d 47 4a f7 c2 66 .a.z......mGJ..f

0010 - 38 8f 11 7f b8 4f a9 6c-42 27 0c a5 bf d6 19 62 8....O.lB'.....b

0020 - 2e d9 91 ca d7 7a d5 08-8d 67 e6 60 5f b8 6f ab .....z...g.`_.o.

0030 - cd b5 ee d1 f0 b9 96 49-74 49 89 8d 98 cf d3 fc .......ItI......

0040 - 54 84 e6 9e 05 2e a3 eb-ed 1d a5 91 ca 8d 3b a5 T.............;.

0050 - ae 50 44 ae b6 86 9e 90-1e 0e c9 59 00 e9 06 fd .PD........Y....

0060 - 8d fa e8 60 6a 83 22 19-a1 05 80 8c c3 41 02 84 ...`j."......A..

0070 - 66 9a 37 df 11 16 a1 ec-8d a1 ad 42 7c 2c 28 ca f.7........B|,(.

0080 - 5e 1d da b0 f2 11 8b 4a-4b b5 84 f3 d2 d4 27 5f ^......JK.....'_

0090 - d3 ce 62 e3 0b 85 51 b6-04 d6 3f 6d 59 fe 5b 59 ..b...Q...?mY.[Y

00a0 - 61 cd a2 1f 32 9b ba ec-a6 ed db 3e e4 42 9f 6b a...2......>.B.k

00b0 - 88 37 5d bb 25 7c 52 52-71 74 d0 9c 29 29 7e 0e .7].%|RRqt..))~.

00c0 - 06 8b 2d a0 72 8a 96 e4-65 60 10 9b 72 0c 84 82 ..-.r...e`..r...

Start Time: 1733211916

Timeout : 7200 (sec)

Verify return code: 0 (ok)

Extended master secret: no

Max Early Data: 0

---

read R BLOCK

220 mail.k-in.co.jp ESMTP Postfix

EHLO macmi2.lo.k-in.co.jp

250-mail.k-in.co.jp

250-PIPELINING

250-SIZE 10240000

250-VRFY

250-ETRN

250-AUTH PLAIN LOGIN

250-AUTH=PLAIN LOGIN

250-ENHANCEDSTATUSCODES

250-8BITMIME

250-DSN

250 CHUNKING

quit

221 2.0.0 Bye

closed

出来て居るんじゃね？
やったねっ！

でもね、Macのメールアプリからは送信出来ないんだ。
何でだろう？

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