服务器硬件配置
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Friday, July 25. 2008
courier-imap pop3故障：pop3d: chdir xxxx: Permission denied
在数据库中将用户的uid和gid改成正确的对Maildir有权限的用户id即可和组ID即可。
应该是pop3d在读取邮件的时候会以这个uid和gid的身份进行操作。
Postfix error: fatal: scan_dir_push: open directory defer: Permission denied
> hi, i've postfix with 2 instances one for inbound and one for outbound
> each one in its corresponding ethernet.
>
> Both of them were working fine, till today, when i tried to update
> postfix outbound to version 2.2.3.
>
> Now im getting this error on errors:
>
> vida postfix-out/postsuper[26783]: fatal: scan_dir_push: open
> directory defer: Permission denied
>
> vida postfix-out/postfix-script: fatal: Postfix integrity check failed!
To correct queues that were created outside of Postfix:
postfix [-c config_directory] set-permissions
Don't copy/create/move Postfix queues by hand. Use the Postfix
built-in procedures instead.
> each one in its corresponding ethernet.
>
> Both of them were working fine, till today, when i tried to update
> postfix outbound to version 2.2.3.
>
> Now im getting this error on errors:
>
> vida postfix-out/postsuper[26783]: fatal: scan_dir_push: open
> directory defer: Permission denied
>
> vida postfix-out/postfix-script: fatal: Postfix integrity check failed!
To correct queues that were created outside of Postfix:
postfix [-c config_directory] set-permissions
Don't copy/create/move Postfix queues by hand. Use the Postfix
built-in procedures instead.
Thursday, July 24. 2008
Robert Watson : Reading the FreeBSD Kernel (ZT)
In September, 2005, I had the opportunity to exchange e-mail with Halil Demirezen on the subject of getting to know the FreeBSD kernel. Since the answer seemed of more general interest, I thought I'd posted it on my web site in case it was of interest to anyone else.
From rwatson at FreeBSD.org Tue Sep 6 14:10:10 2005
Date: Tue, 6 Sep 2005 14:10:10 +0100 (BST)
From: Robert Watson <rwatson at FreeBSD dot org>
To: Halil Demirezen < halil at enderunix dot org>
Subject: Re: One dummy question but important for me.
On Tue, 6 Sep 2005, Halil Demirezen wrote:
> It is one little sample of hundred thousands of silly questions. But for
> an individual it is really important one. I have been dealing with
> kernel (/usr/src/sys/) in FreeBSD. However, this is really a big
> challenge. My graduate thesis was a little i386 kernel that boots from
> Floppy Disks (3 1/2). Run in protected mode. A shell little memory
> management and multiprocessed one.
>
> I am coping with FreeBSD kernel to understand and to hack it. Where to
> start? It is really difficult to understand the essentials. I am sure i
> will spend my time on it. But what are the first essentials for a kernel
> developer to be in the developing. I know it is easy for one who started
> developing FreeBSD from the beginning. But as the code grows, It starts
> to be impossible to begin. I tried to start from booting process. But
> the kernel structure got lost in mind. When I try to understand one
> source file, I need to open several to unite the all.
...
更多内容…From rwatson at FreeBSD.org Tue Sep 6 14:10:10 2005
Date: Tue, 6 Sep 2005 14:10:10 +0100 (BST)
From: Robert Watson <rwatson at FreeBSD dot org>
To: Halil Demirezen < halil at enderunix dot org>
Subject: Re: One dummy question but important for me.
On Tue, 6 Sep 2005, Halil Demirezen wrote:
> It is one little sample of hundred thousands of silly questions. But for
> an individual it is really important one. I have been dealing with
> kernel (/usr/src/sys/) in FreeBSD. However, this is really a big
> challenge. My graduate thesis was a little i386 kernel that boots from
> Floppy Disks (3 1/2). Run in protected mode. A shell little memory
> management and multiprocessed one.
>
> I am coping with FreeBSD kernel to understand and to hack it. Where to
> start? It is really difficult to understand the essentials. I am sure i
> will spend my time on it. But what are the first essentials for a kernel
> developer to be in the developing. I know it is easy for one who started
> developing FreeBSD from the beginning. But as the code grows, It starts
> to be impossible to begin. I tried to start from booting process. But
> the kernel structure got lost in mind. When I try to understand one
> source file, I need to open several to unite the all.
...
Tuesday, May 20. 2008
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