这个软件装不上去，怎么办？

fishfree

参照这篇文章来安装mail服务器：
执行命令：
# apt-get install courier-pop postfix-mysql postfix-tls courier-authdaemon courier-authmysql libpam-mysql libsasl7 libsasl-modules-plain courier-imap
Reading package lists... Done
Building dependency tree... Done
Note, selecting postfix instead of postfix-tls
Package courier-authmysql is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source
However the following packages replace it:
  courier-authlib-mysql
E: Package courier-authmysql has no installation candidate

先谢谢各位了！

glowwarm

提示courier-authmysql 没有安装，google一下，找到装上。

fishfree

我要是能够google得到，也不用来这儿问了

qqeyes

引自google：这个新版本中，courier-authmysql 包已经被 courier-authlib courier-authlib-mysql 所取代，因此安装完之后，卸载掉原来的 courier-authmysql 即可。

luesfeng

courier-authmysql 不用安装
安装courier-authlib-mysql 即可