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邮件 – 理想社会

Category邮件

Exchange2013中断POP3和IMAP4的解决办法

E

Exchange服务器意外重启。之后用户发现无法通过POP3和IMAP4收邮件,连接后会提示ssl error5。 但是Exchange模式可以用。 去服务器上检查,相应的pop3和imap服务均已启动。 端口是正常的,配置文件也没有变化。 在服务器上用foxmail测试。地址填写127.0.0.1时却正常。 【解决办法】 检查服务器组件: 发现有2个组件处于inactive。 使用以下命令激活组件  Set-ServerComponentState -Identity xxmail1 -Component PopProxy  -Requester HealthAPI -State Active  Set-ServerComponentState -Identity xxmail1 -Component ImapProxy -Requester HealthAPI ...

sendmail 文件 virtusertable 管理虚拟域

s

如同Apache一样,sendmail也允许使用虚拟主机功能,这是通过FEATURE(virtusertable)功能实现的,而虚拟主机的文件缺省是/etc/mail/virtusertable。这个文件的形式类似于aliases文件,即:左地址 右地址 ,中间用Tab键分开。还需要注意的是,虚拟域(左地址的域名),应该属于本机接收之列。
joe@yourdomain.com    jschmoe                         1
bogus@yourdomain.com  error:nouser No such user here  2
@testdomain.com       test@mydomain.com               3
@yourdomain.com       %1@othercompany.com             4

Sendmail邮件队列的管理

S

1、队列文件通常存放在/var/spool/mqueue下面,每个待发送的邮件由几个文件构成,例如,我们可以看到下面的目录文件列表:
[root@mail mqueue]# ls
dfRAA27175 xfAAA00733 xfBAA00819 xfEAA32763 xfXAA00706
qfRAA27175 xfAAA00784 xfDAA01360 xfFAA01616
文件名字总是由一个两字符的前缀加上一个随机数字。前缀有四种:

Postfix 电子邮件系统精要(二)

P

◆系统加固及安全 1、内核优化:用脚本实现 [root@mailserv2 ~]# more /usr/local/bin/kernel_optimize #!/bin/bash #kernel optimize optimize ,create by 2007-7-29 #enable broadcast echo protection echo 1 > /proc/sys/net/ipv4/icmp_echo_ignore_broadcasts #disble source routed packets #for f in /proc/sys/net/ipv4/conf/*/accept_source_rout; do #    echo 0 > $f #done #enable tcp syn cookie protection echo 1 >...

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