Jon Cage's questions

我有一个老化的 WinXP Embedded SP3 盒子（不要判断；我们正在弃用它）需要发送电子邮件以获取状态更新等。

这曾经使用 GMail，但他们很快就会关闭对不安全应用程序的支持，因此我们需要在短期内解决这个问题。为此，我设置了一个基于 ubuntu-linux 的 postfix (v3.4.13) 服务器，并尝试将其配置为允许 TLS v1.0 连接。

在运行完全相同的客户端的较新（基于 Windows 10 的计算机）上，他们能够成功连接并发送电子邮件。但是由于某种原因，XP机器出错了。

我需要在后缀中更改设置以允许这些老化的连接吗？

失败的连接示例（后缀日志）：

Mar 24 15:51:22 smtp-relay postfix/smtpd[83942]: initializing the server-side TLS engine
Mar 24 15:51:22 smtp-relay postfix/smtpd[83942]: connect from unknown[62.232.130.246]
Mar 24 15:51:22 smtp-relay postfix/smtpd[83942]: setting up TLS connection from unknown[62.232.130.246]
Mar 24 15:51:22 smtp-relay postfix/smtpd[83942]: unknown[62.232.130.246]: TLS cipher list "aNULL:-aNULL:HIGH:MEDIUM:+RC4:@STRENGTH"
Mar 24 15:51:22 smtp-relay postfix/smtpd[83942]: SSL_accept:before SSL initialization
Mar 24 15:51:22 smtp-relay postfix/smtpd[83942]: read from 558F3C6A5600 [558F3C6AC5A3] (5 bytes => -1 (0xFFFFFFFFFFFFFFFF))
Mar 24 15:51:22 smtp-relay postfix/smtpd[83942]: read from 558F3C6A5600 [558F3C6AC5A3] (5 bytes => 5 (0x5))
Mar 24 15:51:22 smtp-relay postfix/smtpd[83942]: 0000 16 03 01 00 41                                   ....A
Mar 24 15:51:22 smtp-relay postfix/smtpd[83942]: read from 558F3C6A5600 [558F3C6AC5A8] (65 bytes => 65 (0x41))
Mar 24 15:51:22 smtp-relay postfix/smtpd[83942]: 0000 01 00 00 3d 03 01 62 3c|93 7a a3 47 25 d5 46 cd  ...=..b< .z.G%.F.
Mar 24 15:51:22 smtp-relay postfix/smtpd[83942]: 0010 b6 ca 43 77 7c 91 23 47|60 f7 bb 1a 88 04 81 62  ..Cw|.#G `......b
Mar 24 15:51:22 smtp-relay postfix/smtpd[83942]: 0020 07 e3 ac 35 20 1f 00 00|16 00 04 00 05 00 0a 00  ...5 ... ........
Mar 24 15:51:22 smtp-relay postfix/smtpd[83942]: 0030 09 00 64 00 62 00 03 00|06 00 13 00 12 00 63 01  ..d.b... ......c.
Mar 24 15:51:22 smtp-relay postfix/smtpd[83942]: 0040 - <SPACES/NULLS>
Mar 24 15:51:22 smtp-relay postfix/smtpd[83942]: SSL_accept:before SSL initialization
Mar 24 15:51:22 smtp-relay postfix/smtpd[83942]: write to 558F3C6A5600 [558F3C6B4750] (7 bytes => 7 (0x7))
Mar 24 15:51:22 smtp-relay postfix/smtpd[83942]: 0000 15 03 01 00 02 02 28                             ......(
Mar 24 15:51:22 smtp-relay postfix/smtpd[83942]: SSL3 alert write:fatal:handshake failure
Mar 24 15:51:22 smtp-relay postfix/smtpd[83942]: SSL_accept:error in error
Mar 24 15:51:22 smtp-relay postfix/smtpd[83942]: SSL_accept error from unknown[62.232.130.246]: -1
Mar 24 15:51:22 smtp-relay postfix/smtpd[83942]: warning: TLS library problem: error:1417A0C1:SSL routines:tls_post_process_client_hello:no shared cipher:../ssl/statem/statem_srvr.c:2283:
Mar 24 15:51:22 smtp-relay postfix/smtpd[83942]: lost connection after STARTTLS from unknown[62.232.130.246]
Mar 24 15:51:22 smtp-relay postfix/smtpd[83942]: disconnect from unknown[62.232.130.246] ehlo=1 starttls=0/1 commands=1/2

从 win-10 机器成功连接（二进制序列为简洁起见）：

Mar 24 15:45:32 smtp-relay postfix/smtpd[83924]: initializing the server-side TLS engine
Mar 24 15:45:32 smtp-relay postfix/smtpd[83924]: connect from unknown[62.232.130.246]
Mar 24 15:45:32 smtp-relay postfix/smtpd[83924]: setting up TLS connection from unknown[62.232.130.246]
Mar 24 15:45:32 smtp-relay postfix/smtpd[83924]: unknown[62.232.130.246]: TLS cipher list "aNULL:-aNULL:HIGH:MEDIUM:+RC4:@STRENGTH"
Mar 24 15:45:32 smtp-relay postfix/smtpd[83924]: SSL_accept:before SSL initialization
Mar 24 15:45:32 smtp-relay postfix/smtpd[83924]: read from 55CE58FD8490 [55CE590115A3] (5 bytes => -1 (0xFFFFFFFFFFFFFFFF))
Mar 24 15:45:32 smtp-relay postfix/smtpd[83924]: read from 55CE58FD8490 [55CE590115A3] (5 bytes => 5 (0x5))
Mar 24 15:45:32 smtp-relay postfix/smtpd[83924]: 0000 16 03 01 00 7a                                   ....z
Mar 24 15:45:32 smtp-relay postfix/smtpd[83924]: read from 55CE58FD8490 [55CE590115A8] (122 bytes => 122 (0x7A))
Mar 24 15:45:32 smtp-relay postfix/smtpd[83924]: 0000 01 00 00 76 03 01 62 3c|92 0b e0 5b 1a 7f 9e 24  ...v..b< ...[...$

...

Mar 24 15:45:32 smtp-relay postfix/smtpd[83924]: 0070 00 00 17 00 00 ff 01 00|01                       ........ .
Mar 24 15:45:32 smtp-relay postfix/smtpd[83924]: 0079 - <SPACES/NULLS>
Mar 24 15:45:32 smtp-relay postfix/smtpd[83924]: SSL_accept:before SSL initialization
Mar 24 15:45:32 smtp-relay postfix/smtpd[83924]: SSL_accept:SSLv3/TLS read client hello
Mar 24 15:45:32 smtp-relay postfix/smtpd[83924]: SSL_accept:SSLv3/TLS write server hello
Mar 24 15:45:32 smtp-relay postfix/smtpd[83924]: write to 55CE58FD8490 [55CE59019750] (4096 bytes => 4096 (0x1000))
Mar 24 15:45:32 smtp-relay postfix/smtpd[83924]: 0000 16 03 01 00 41 02 00 00|3d 03 01 4d d2 77 f9 9c  ....A... =..M.w..

...

Mar 24 15:45:32 smtp-relay postfix/smtpd[83924]: 0ff0 e9 ec e3 86 00 de 9d 10|e3 38 fa a4 7d b1 d8 e8  ........ .8..}...
Mar 24 15:45:32 smtp-relay postfix/smtpd[83924]: SSL_accept:SSLv3/TLS write certificate
Mar 24 15:45:32 smtp-relay postfix/smtpd[83924]: SSL_accept:SSLv3/TLS write key exchange
Mar 24 15:45:32 smtp-relay postfix/smtpd[83924]: write to 55CE58FD8490 [55CE59019750] (330 bytes => 330 (0x14A))
Mar 24 15:45:32 smtp-relay postfix/smtpd[83924]: 0000 49 82 84 06 9b 2b e8 6b|4f 01 0c 38 77 2e f9 dd  I....+.k O..8w...

...

Mar 24 15:45:32 smtp-relay postfix/smtpd[83924]: 0130 bb bf c2 b5 eb 25 5e 18|74 6e ca ad 10 ee 91 51  .....%^. tn.....Q
Mar 24 15:45:32 smtp-relay postfix/smtpd[83924]: 0140 2f 16 03 01 00 04 0e                             /......
Mar 24 15:45:32 smtp-relay postfix/smtpd[83924]: 0147 - <SPACES/NULLS>
Mar 24 15:45:32 smtp-relay postfix/smtpd[83924]: SSL_accept:SSLv3/TLS write server done
Mar 24 15:45:32 smtp-relay postfix/smtpd[83924]: read from 55CE58FD8490 [55CE590115A3] (5 bytes => -1 (0xFFFFFFFFFFFFFFFF))
Mar 24 15:45:32 smtp-relay postfix/smtpd[83924]: read from 55CE58FD8490 [55CE590115A3] (5 bytes => 5 (0x5))
Mar 24 15:45:32 smtp-relay postfix/smtpd[83924]: 0000 16 03 01 00 25                                   ....%
Mar 24 15:45:32 smtp-relay postfix/smtpd[83924]: read from 55CE58FD8490 [55CE590115A8] (37 bytes => 37 (0x25))
Mar 24 15:45:32 smtp-relay postfix/smtpd[83924]: 0000 10 00 00 21 20 01 8c 9c|11 84 58 2d d6 b3 77 7c  ...! ... ..X-..w|
Mar 24 15:45:32 smtp-relay postfix/smtpd[83924]: 0010 5c d0 87 bd 98 e7 0e a1|dd 10 51 c8 27 98 e9 3e  \....... ..Q.'..>
Mar 24 15:45:32 smtp-relay postfix/smtpd[83924]: 0020 cb 64 24 7a 0a                                   .d$z.
Mar 24 15:45:32 smtp-relay postfix/smtpd[83924]: SSL_accept:SSLv3/TLS write server done
Mar 24 15:45:32 smtp-relay postfix/smtpd[83924]: read from 55CE58FD8490 [55CE590115A3] (5 bytes => 5 (0x5))
Mar 24 15:45:32 smtp-relay postfix/smtpd[83924]: 0000 14 03 01 00 01                                   .....
Mar 24 15:45:32 smtp-relay postfix/smtpd[83924]: read from 55CE58FD8490 [55CE590115A8] (1 bytes => 1 (0x1))
Mar 24 15:45:32 smtp-relay postfix/smtpd[83924]: 0000 01                                               .
Mar 24 15:45:32 smtp-relay postfix/smtpd[83924]: SSL_accept:SSLv3/TLS read client key exchange
Mar 24 15:45:32 smtp-relay postfix/smtpd[83924]: read from 55CE58FD8490 [55CE590115A3] (5 bytes => 5 (0x5))
Mar 24 15:45:32 smtp-relay postfix/smtpd[83924]: 0000 16 03 01 00 30                                   ....0
Mar 24 15:45:32 smtp-relay postfix/smtpd[83924]: read from 55CE58FD8490 [55CE590115A8] (48 bytes => 48 (0x30))
Mar 24 15:45:32 smtp-relay postfix/smtpd[83924]: 0000 a4 a1 7c 35 01 99 6f 54|16 81 3a 80 00 a4 2e 99  ..|5..oT ..:.....
Mar 24 15:45:32 smtp-relay postfix/smtpd[83924]: 0010 b1 2a 95 89 f3 37 0e 96|21 25 06 cc c8 8b 57 4e  .*...7.. !%....WN
Mar 24 15:45:32 smtp-relay postfix/smtpd[83924]: 0020 16 46 5f 54 0f 77 14 59|47 30 00 9e a5 6a b9 5f  .F_T.w.Y G0...j._
Mar 24 15:45:32 smtp-relay postfix/smtpd[83924]: SSL_accept:SSLv3/TLS read change cipher spec
Mar 24 15:45:32 smtp-relay postfix/smtpd[83924]: SSL_accept:SSLv3/TLS read finished
Mar 24 15:45:32 smtp-relay postfix/smtpd[83924]: unknown[62.232.130.246]: Issuing session ticket, key expiration: 1648138531
Mar 24 15:45:32 smtp-relay postfix/smtpd[83924]: SSL_accept:SSLv3/TLS write session ticket
Mar 24 15:45:32 smtp-relay postfix/smtpd[83924]: SSL_accept:SSLv3/TLS write change cipher spec
Mar 24 15:45:32 smtp-relay postfix/smtpd[83924]: write to 55CE58FD8490 [55CE59019750] (250 bytes => 250 (0xFA))
Mar 24 15:45:32 smtp-relay postfix/smtpd[83924]: 0000 16 03 01 00 ba 04 00 00|b6 00 00 1c 20 00 b0 b0  ........ .... ...

...

Mar 24 15:45:32 smtp-relay postfix/smtpd[83924]: 00f0 db fc 56 30 de fc cf b4|70 68                    ..V0.... ph
Mar 24 15:45:32 smtp-relay postfix/smtpd[83924]: SSL_accept:SSLv3/TLS write finished
Mar 24 15:45:32 smtp-relay postfix/smtpd[83924]: Anonymous TLS connection established from unknown[62.232.130.246]: TLSv1 with cipher ECDHE-RSA-AES256-SHA (256/256 bits)
Mar 24 15:45:32 smtp-relay postfix/smtpd[83924]: read from 55CE58FD8490 [55CE590115A3] (5 bytes => -1 (0xFFFFFFFFFFFFFFFF))
Mar 24 15:45:33 smtp-relay postfix/smtpd[83924]: read from 55CE58FD8490 [55CE590115A3] (5 bytes => 0 (0x0))
Mar 24 15:45:33 smtp-relay postfix/smtpd[83924]: lost connection after STARTTLS from unknown[62.232.130.246]
Mar 24 15:45:33 smtp-relay postfix/smtpd[83924]: disconnect from unknown[62.232.130.246] ehlo=1 starttls=1 commands=2

正如标题所暗示的，我正试图密切关注与几台机器的 RDP 连接/断开连接。一个运行 Windows XP，一个运行 Windows 7。

我已经检查了 Windows XP 机器上的事件日志，其中没有提到任何内容。它只是 Windows 2003 Server 的一项功能吗？

我有一个运行 Windows 的盒子，我想为其分配一个静态 IP，但提供远程访问以更改该 IP（不提供对 Windows 安装的完全访问权限）。我想运行一个小应用程序或命令或类似的东西来连接到那台机器并告诉它尝试将它的 IP 地址更改为新值。如果有任何问题，它应该在超时后再次改变自己。

有没有可以做很多事情的免费软件？..或者有没有我可以用一些 Python 包装的命令行实用程序？...或任何其他选择？

我目前使用 Apache 2.0 和 FastCGI 为我的 Django 站点提供服务（我从单个服务器/IP 托管多个站点）。每个站点都有自己的 FastCGI 进程，它可以阻止 Apache 分叉多个副本，这会占用大量内存，这意味着我可以在不重新启动 Apache 的情况下重新启动单个 Django 站点后端。

这是一种明智的做事方式吗？还有其他/更好的选择吗？