flyinweb's blog

Apache HTTP Server Version 2.2 文档

1、checking for SSL_set_cert_store... no
configure: error: ... Error, SSL/TLS libraries were missing or unusable

安装openssl,在编译参数中添加--with-ssl=/usr/local/ssl （ssl安装路径，根据安装的实际路径设置）

At Gigahost we are managing a lot of mailboxes for our users.

At the moment these are all located on one high speced server with the outgoing SMTP split to another server.

We allow our users to connect via both IMAP and POP3 and support STARTTLS on ports 110/143 and SSL/TLS on ports 993/995.

Since we are constantly adding new users and these in turn add new mailboxes we are running out of options as to upgrade the current server. Hosting mailboxes via Courier, Dovecot or similar is very IO intensive and therefore in the long run disk IO becomes a problem.

The solution to this is ofcourse to scale the setup to more servers. Some hosting providers do this by simply adding users to a new mail server eg. mail2.example.com, mail3.example.com and so on.

What we would like to do is use a reverse proxy so that the user always connects to mail.gigahost.dk and the proxy ensures that the user is send to the correct server.

1、Using a php script on apache server as the auth backend

Start with the configuration from NginxImapProxyExample. For detail information about different configuration parameters, see the NginxMailCoreModule page.

1. Your Proxy server for pop/imap is running on 192.168.1.1
2. You have 2 backend pop/imap servers: 192.168.1.22 and 192.168.1.33
3. You have a webserver that you will use for the authentication and redirection logic 192.168.1.44.
4. The authentication script is /mail/auth.php

本专题主题收集PHP编译过程中的错误及其解决方案。

/libxmlrpc/encoding.c:101:undefined reference to 'libiconv_close'
collect2: ld returned 1 exit status
make:*** [sapi/fpm/php-fpm] Error 1
解决方法：
#make ZEND_EXTRA_LIBS='-liconv'
1、编译php出错
/php-5.3.2/ext/fileinfo/libmagic/apprentice.c:147:internal compiler error:Segmentation fault
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://bugzilla.redhat.com/bugzilla> for instructions.
The bug is not reproducible,so it is likely a hardware or OS problem.
make:*** [ext/fileinfo/libmagic/apprentice.lo] Error 1
解决方法：内存大于1G即可，这是php5.3.2的一个bug
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2、重新构造configure文件出错
./buildconf --force
Forcing buildconf
buildconf:checking installation…
buildconf:autoconf version 2.59 （ok）
buildconf:Your version of autoconf likely contains buggy cache code.
Running vcsclean for you.
To avoid this,install autoconf-2.13.
Can't figure out your VCS, not cleaning.
解决方法：编译安装autoconf-2.13
再将autoconf-2.13的auotconf文件至/usr/local/autoconf

How do I verify and diagnosis SSL certification installation from a Linux / UNIX shell prompt? How do I validate SSL Certificate installation and save hours of troubleshooting headaches without using a browser? How do I confirm I've the correct and working SSL certificates?

OpenSSL comes with a generic SSL/TLS client which can establish a transparent connection to a remote server speaking SSL/TLS. It’s intended for testing purposes only and provides only rudimentary interface functionality but internally uses mostly all functionality of the OpenSSL ssl library. For testing purpose I will use mail.nixcraft.net:443 SSL certificate which is issued by Go Daddy.

 Last month we released the Beta of VS 2010 Service Pack 1 (SP1). You can learn more about the VS 2010 SP1 Beta from Jason Zander’s twoblog posts about it, and from Scott Hanselman’s blog post that covers some of the new capabilities enabled with it. You can download and install the VS 2010 SP1 Beta here.

Last week I blogged about the new Visual Studio support for IIS Express that we are adding with VS 2010 SP1. In today’s post I’m going to talk about the new VS 2010 SP1 tooling support for SQL CE, and walkthrough some of the cool scenarios it enables.