Thunderbird サーバーにログインできません postfix

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[root@ ~]# openssl s_client -ssl3 -connect mail.server:465
CONNECTED(00000003)
140456431183760:error:14094410:SSL routines:ssl3_read_bytes:sslv3 alert handshake failure:s3_pkt.c:1493:SSL alert number 40
140456431183760:error:1409E0E5:SSL routines:ssl3_write_bytes:ssl handshake failure:s3_pkt.c:659:
---
no peer certificate available
---
No client certificate CA names sent
---
SSL handshake has read 7 bytes and written 0 bytes
---
New, (NONE), Cipher is (NONE)
Secure Renegotiation IS NOT supported
Compression: NONE
Expansion: NONE
No ALPN negotiated
SSL-Session:
Protocol : SSLv3
Cipher : 0000
Session-ID:
Session-ID-ctx:
Master-Key:
Key-Arg : None
Krb5 Principal: None
PSK identity: None
PSK identity hint: None
Start Time: 1603182528
Timeout : 7200 (sec)
Verify return code: 0 (ok)
---
[root@ ~]# openssl s_client -tls1 -connect mail.server:465
CONNECTED(00000003)
depth=2 O = Digital Signature Trust Co., CN = DST Root CA X3
verify return:1
depth=1 C = US, O = Let's Encrypt, CN = Let's Encrypt Authority X3
verify return:1
depth=0 CN = mail.suzunet.info
verify return:1
---
Certificate chain
0 s:/CN=mail.server
i:/C=US/O=Let's Encrypt/CN=Let's Encrypt Authority X3
1 s:/C=US/O=Let's Encrypt/CN=Let's Encrypt Authority X3
i:/O=Digital Signature Trust Co./CN=DST Root CA X3
---
Server certificate
-----BEGIN CERTIFICATE-----

-----END CERTIFICATE-----
subject=/CN=mail.server
issuer=/C=US/O=Let's Encrypt/CN=Let's Encrypt Authority X3
---
No client certificate CA names sent
Server Temp Key: ECDH, P-256, 256 bits
---
SSL handshake has read 3218 bytes and written 315 bytes
---
New, TLSv1/SSLv3, Cipher is ECDHE-RSA-AES256-SHA
Server public key is 2048 bit
Secure Renegotiation IS supported
Compression: NONE
Expansion: NONE
No ALPN negotiated
SSL-Session:
Protocol : TLSv1
Cipher : ECDHE-RSA-AES256-SHA
Session-ID:
Session-ID-ctx:
Master-Key:
Key-Arg : None
Krb5 Principal: None
PSK identity: None
PSK identity hint: None
TLS session ticket lifetime hint: 3600 (seconds)
TLS session ticket:

Start Time: 1603182582
Timeout : 7200 (sec)
Verify return code: 0 (ok)
---
220 mail.server ESMTP unknown
^C
[root@ ~]# openssl s_client -tls1_1 -connect mail.server:465
CONNECTED(00000003)
depth=2 O = Digital Signature Trust Co., CN = DST Root CA X3
verify return:1
depth=1 C = US, O = Let's Encrypt, CN = Let's Encrypt Authority X3
verify return:1
depth=0 CN = mail.suzunet.info
verify return:1
---
Certificate chain
0 s:/CN=mail.server
i:/C=US/O=Let's Encrypt/CN=Let's Encrypt Authority X3
1 s:/C=US/O=Let's Encrypt/CN=Let's Encrypt Authority X3
i:/O=Digital Signature Trust Co./CN=DST Root CA X3
---
Server certificate
-----BEGIN CERTIFICATE-----

-----END CERTIFICATE-----
subject=/CN=mail.server
issuer=/C=US/O=Let's Encrypt/CN=Let's Encrypt Authority X3
---
No client certificate CA names sent
Server Temp Key: ECDH, P-256, 256 bits
---
SSL handshake has read 3234 bytes and written 331 bytes
---
New, TLSv1/SSLv3, Cipher is ECDHE-RSA-AES256-SHA
Server public key is 2048 bit
Secure Renegotiation IS supported
Compression: NONE
Expansion: NONE
No ALPN negotiated
SSL-Session:
Protocol : TLSv1.1
Cipher : ECDHE-RSA-AES256-SHA
Session-ID:
Session-ID-ctx:
Master-Key:
Key-Arg : None
Krb5 Principal: None
PSK identity: None
PSK identity hint: None
TLS session ticket lifetime hint: 3600 (seconds)
TLS session ticket:

Start Time: 1603182601
Timeout : 7200 (sec)
Verify return code: 0 (ok)
---
220 mail.server ESMTP unknown
^C
[root@ ~]# openssl s_client -tls1_2 -connect mail.server:465
CONNECTED(00000003)
depth=2 O = Digital Signature Trust Co., CN = DST Root CA X3
verify return:1
depth=1 C = US, O = Let's Encrypt, CN = Let's Encrypt Authority X3
verify return:1
depth=0 CN = mail.suzunet.info
verify return:1
---
Certificate chain
0 s:/CN=mail.server
i:/C=US/O=Let's Encrypt/CN=Let's Encrypt Authority X3
1 s:/C=US/O=Let's Encrypt/CN=Let's Encrypt Authority X3
i:/O=Digital Signature Trust Co./CN=DST Root CA X3
---
Server certificate
-----BEGIN CERTIFICATE-----

-----END CERTIFICATE-----
subject=/CN=mail.server
issuer=/C=US/O=Let's Encrypt/CN=Let's Encrypt Authority X3
---
No client certificate CA names sent
Peer signing digest: SHA512
Server Temp Key: ECDH, P-256, 256 bits
---
SSL handshake has read 3212 bytes and written 415 bytes
---
New, TLSv1/SSLv3, Cipher is ECDHE-RSA-AES256-GCM-SHA384
Server public key is 2048 bit
Secure Renegotiation IS supported
Compression: NONE
Expansion: NONE
No ALPN negotiated
SSL-Session:
Protocol : TLSv1.2
Cipher : ECDHE-RSA-AES256-GCM-SHA384
Session-ID:
Session-ID-ctx:
Master-Key:
Key-Arg : None
Krb5 Principal: None
PSK identity: None
PSK identity hint: None
TLS session ticket lifetime hint: 3600 (seconds)
TLS session ticket:

Start Time: 1603182613
Timeout : 7200 (sec)
Verify return code: 0 (ok)
---
220 mail.server ESMTP unknown

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Thunderbirdのセットアップ方法は?

初期設定(アカウント追加)する.
【1】デスクトップから「Thunderbird」を起動.
【2】[別のアカウントをセットアップ]の[メール]をクリック.
【3】画面が開いたら「お名前(差出人名)」「メールアドレス」「パスワード」を入力。[ ... .
【5】画面右上[≡]から[アカウント設定]をクリック.

サンダーバード 設定を確認してください。ユーザー名やパスワードが間違っていませんか?

ユーザー名やパスワード設定間違っていないか確認してください。」が表示される場合は、入力されたメールアドレスのメールユーザー名 (@ より左側) やパスワードに誤りがある可能性があります。 メールアドレスやパスワードをご確認のうえ、再度ご入力をお試しください。 以上で、POP でのメールアドレスの設定は完了です。

Thunderbirdのメールパスワードエラーは?

パスワードが間違っている場合 「サーバー~へのログインに失敗しました。」 とエラーメッセージが表示されたら「新しいパスワードを入力」をクリックしましょう。 するとメールアカウントのパスワード入力画面が表示されるので、パスワードを入力して「OK」をクリックすれば設定完了です。 これでログインできるようになりますよ。