我有一个小问题。我提供一些客户端访问我的服务器以执行自己的脚本（当然在他们自己的 chroot 环境中，等等......）。今天发生的问题：有些人在端口 25 上获得对 localhost 的 telnet 访问权限，并且正在向世界发送电子邮件，这几乎是一个开放的中继:(
我正在使用后缀，它还需要身份验证：
smtpd_recipient_restrictions = permit_mynetworks, permit_sasl_authenticated, check_recipient_access mysql:/etc/postfix/mysql-virtual_recipient.cf, reject_unauth_destination
但是本地脚本显然不需要经过 sasl 认证。如果从 permit_mynetworks 中删除 localhost，则某些反垃圾邮件例程不再起作用...
那么如何配置 postfix 以允许本地主机在本地发送邮件而不是在没有身份验证的情况下从外部发送邮件呢？
有什么建议么？
我已经设置了带有 DNS 和 AD 的 Windows Server 2008R2。当我在服务器上定义一个共享文件夹并通过 \domain.lan\folder 连接到它时，我可以看到内容，但是如果我尝试更改文件夹中的某些内容，则会收到错误“找不到元素”。这种行为总是一样的。我尝试直接从服务器连接还是通过 Windows 7 客户端连接都没有关系。但是：如果我通过服务器的 IP 地址访问文件夹，例如 \192.168.0.22\folder 一切正常。所以我猜 Windows DNS 服务器有一个大问题。ping domain.lan 会得到正确的 IP 地址，因此可以正确解析。我不知道问题可能出在哪里。
顺便说一句：我可以用我的 PC 上的虚拟机和不同的名称和 IP 地址完全重现这个问题......
有人猜吗？
我在 Debian 下的 Software-Raid 突然说：
Personalities : [raid0] [raid1] [raid6] [raid5] [raid4] [raid10]
md2 : active raid1 sda3[0](F) sdb3[1]
2917156159 blocks super 1.2 [2/1] [_U]
md1 : active raid1 sda2[0] sdb2[1]
524276 blocks super 1.2 [2/2] [UU]
md0 : active raid1 sda1[0] sdb1[1]
12581816 blocks super 1.2 [2/2] [UU]
但是完整的 6 小时检查确实导致硬盘驱动器功能齐全。所以硬盘没问题。
所以我做了以下事情：
mdadm /dev/md2 --remove /dev/sda3
mdadm /dev/md2 --add /dev/sda3
我认为这一直有效到 50%，但现在 RAID 说：
Personalities : [raid0] [raid1] [raid6] [raid5] [raid4] [raid10]
md2 : active raid1 sda3[0](S) sdb3[1]
2917156159 blocks super 1.2 [2/1] [_U]
md1 : active raid1 sda2[0] sdb2[1]
524276 blocks super 1.2 [2/2] [UU]
md0 : active raid1 sda1[0] sdb1[1]
12581816 blocks super 1.2 [2/2] [UU]
到底出了什么问题？
编辑：Okey fdisk -l 显示以下内容（磁盘是两个完全相同的 HDD）：
WARNING: GPT (GUID Partition Table) detected on '/dev/sdb'! The util fdisk doesn't support GPT. Use GNU Parted.
Disk /dev/sdb: 3000.6 GB, 3000592982016 bytes
256 heads, 63 sectors/track, 363376 cylinders
Units = cylinders of 16128 * 512 = 8257536 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk identifier: 0x00000000
Device Boot Start End Blocks Id System
/dev/sdb1 1 266306 2147483647+ ee GPT
Partition 1 does not start on physical sector boundary.
WARNING: GPT (GUID Partition Table) detected on '/dev/sda'! The util fdisk doesn't support GPT. Use GNU Parted.
Disk /dev/sda: 3000.6 GB, 3000592982016 bytes
256 heads, 63 sectors/track, 363376 cylinders
Units = cylinders of 16128 * 512 = 8257536 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk identifier: 0x00000000
Device Boot Start End Blocks Id System
/dev/sda1 1 266306 2147483647+ ee GPT
Partition 1 does not start on physical sector boundary.
Disk /dev/md0: 12.9 GB, 12883779584 bytes
2 heads, 4 sectors/track, 3145454 cylinders
Units = cylinders of 8 * 512 = 4096 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk identifier: 0x00000000
Disk /dev/md0 doesn't contain a valid partition table
Disk /dev/md1: 536 MB, 536858624 bytes
2 heads, 4 sectors/track, 131069 cylinders
Units = cylinders of 8 * 512 = 4096 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk identifier: 0x00000000
Disk /dev/md1 doesn't contain a valid partition table
Disk /dev/md2: 2987.2 GB, 2987167906816 bytes
2 heads, 4 sectors/track, 729289039 cylinders
Units = cylinders of 8 * 512 = 4096 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk identifier: 0x00000000
Disk /dev/md2 doesn't contain a valid partition table
编辑2：
root@ICELAND ~ # gdisk -l /dev/sda
GPT fdisk (gdisk) version 0.8.1
Partition table scan:
MBR: protective
BSD: not present
APM: not present
GPT: present
Found valid GPT with protective MBR; using GPT.
Disk /dev/sda: 5860533168 sectors, 2.7 TiB
Logical sector size: 512 bytes
Disk identifier (GUID): 602051E0-41A7-4BD3-BEBD-0072BF1940A3
Partition table holds up to 128 entries
First usable sector is 34, last usable sector is 5860533134
Partitions will be aligned on 2048-sector boundaries
Total free space is 2014 sectors (1007.0 KiB)
Number Start (sector) End (sector) Size Code Name
1 4096 25169919 12.0 GiB FD00
2 25169920 26218495 512.0 MiB FD00
3 26218496 5860533134 2.7 TiB FD00
4 2048 4095 1024.0 KiB EF02
root@ICELAND ~ # gdisk -l /dev/sdb
GPT fdisk (gdisk) version 0.8.1
Partition table scan:
MBR: protective
BSD: not present
APM: not present
GPT: present
Found valid GPT with protective MBR; using GPT.
Disk /dev/sdb: 5860533168 sectors, 2.7 TiB
Logical sector size: 512 bytes
Disk identifier (GUID): 1845979C-A245-48E6-88F7-163163A39A6B
Partition table holds up to 128 entries
First usable sector is 34, last usable sector is 5860533134
Partitions will be aligned on 2048-sector boundaries
Total free space is 2014 sectors (1007.0 KiB)
Number Start (sector) End (sector) Size Code Name
1 4096 25169919 12.0 GiB FD00
2 25169920 26218495 512.0 MiB FD00
3 26218496 5860533134 2.7 TiB FD00
4 2048 4095 1024.0 KiB EF02
root@ICELAND ~ # mdadm --detail /dev/md2
/dev/md2:
Version : 1.2
Creation Time : Tue Oct 23 19:11:10 2012
Raid Level : raid1
Array Size : 2917156159 (2782.02 GiB 2987.17 GB)
Used Dev Size : 2917156159 (2782.02 GiB 2987.17 GB)
Raid Devices : 2
Total Devices : 2
Persistence : Superblock is persistent
Update Time : Wed Sep 11 19:12:03 2013
State : active, degraded
Active Devices : 1
Working Devices : 2
Failed Devices : 0
Spare Devices : 1
Name : rescue:2
UUID : d09a5141:6abfc440:358a06e7:9445fbea
Events : 2256201
Number Major Minor RaidDevice State
0 0 0 0 removed
1 8 19 1 active sync /dev/sdb3
0 8 3 - spare /dev/sda3
root@ICELAND ~ #