Exim Wont Work, Redhat ES4
Mar 6, 2007
I have complied exim 4.66 version using the source, now i do not seem to make it work
i am getting the fallowing error when i try send mail
$ exim xxx@xxxx.xxx
test
2007-03-06 12:36:44 1HOeWd-0000SH-EZ Cannot open main log file "/var/log/exim/mainlog": Permission denied: euid=8 egid=12
2007-03-06 12:36:44 1HOeWd-0000SH-EZ Failed to create spool file /var/spool/exim/input//1HOeWd-0000SH-EZ-D: Permission denied
2007-03-06 12:36:44 1HOeWd-0000SH-EZ Cannot open main log file "/var/log/exim/mainlog": Permission denied: euid=8 egid=12
exim: could not open panic log - aborting: see message(s) above
when i do $ service exim restart the service fail to stop and but starts OK.
there is no control panel installed on the box.
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Apr 8, 2008
Spambox work fine with Spamassasin But not with X-Exiscan-SA
Into exim configuration there is this row:
condition = ${if match{$h_X-Spam-Status:}{N^YesN}{true}{false}}
If an email is tagged as spam from spamassasin is moved to /spam because have the header
X-Spam-Status: Yes, score=16.4
BUT, If an email is tagged as spam from Exiscan (and not spamassasin) email still be to inbox.
Exiscan add this header
X-Exiscan-SA-Score: 7.6 (+++++++)
So, think best way is to modify the exim configuration and add a condition:
IF there is "X-Exiscan-SA-Score" SO move to /spam
This condition may work with
condition = ${if match{$h_X-Spam-Status:}{N^YesN}{true}{false}}
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Jun 11, 2009
I have a powerful 8 core 8gb ram web server with scsi raid drives running RedHat EL 4. This server handles 2,000 - 3,000 HTTP requests per second via Litespeed httpd without strain (over 60%+ CPU idle time during peak load, under 1% IO wait). As the traffic volume continues to increase I've encountered a strange problem, the symptoms of which are as follows:
- About 1/4 or 1/3 of new connections are not answered by the server - they time out.
- All connections that are answered have exactly 3 seconds added to the time it takes to establish connection with the server (can be seen as "Connecting to ..." phase in FireFox). HTTP response times were tested by Pingdom from multiple locations all over the world.
- The problem is either "on" or "off", it is not gradual.
- Server ping is unaffected during the problem - no delay and no packet drops.
- The problem does not happen during off-peak hours of the day.
If litespeed httpd settings are tweaked to keep as many connections as possible in keepalive state for as long as possible, the problem is avoided, while tens of thousands of connections are kept in keepalive state.
Possible causes that were tested and eliminated: PHP/MySQL load (problem applies to static files exactly the same), CPU / IO / RAM, network uplink, hardware firewall, DNS.
This makes me think that there is some kind of bottleneck of how many NEW connections per second the server can accept. By maxing out keepalive quantity and duration I'm reducing the number of new connections per second. This is a temporary fix that will only work up to a certain point.
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Litespeed staff suggests that likely some limit in linux kernel is being reached. The strange 3 second delay does seem like an "intelligent" DDOS protection strategy of some sort. Perhaps this is some kind of kernel level DDOS protection?
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For the past two weeks, our Hypertown RedHat RHEL 5.2 server has been going down everyday because of a wierd Kernel Panic problem.
Attached you can see what was displayed on the console at the time of the panic. This is what SoftLayer tech. support team was able to obtain from the console.
We are not using Samba or NFS-based applications.
Here is the server's info:
[kaware3@rannatweb ~]$ uname -a
Linux rannatweb.com 2.6.18-92.1.6.el5PAE #1 SMP Fri Jun 20 02:51:01 EDT 2008 i686 i686 i386 GNU/Linux
[kaware3@rannatweb ~]$ free
total used free shared buffers cached
Mem: 16632176 3244660 13387516 0 234480 1934632
-/+ buffers/cache: 1075548 15556628
Swap: 2096472 0 2096472
[kaware3@rannatweb ~]$ more /etc/fstab
LABEL=/1 / ext3 defaults 1 1
LABEL=/var1 /var ext3 defaults 1 2
LABEL=/boot1 /boot ext3 defaults 1 2
tmpfs /dev/shm tmpfs defaults 0 0
devpts /dev/pts devpts gid=5,mode=620 0 0
sysfs /sys sysfs defaults 0 0
proc /proc proc defaults 0 0
LABEL=SWAP-sda3 swap swap pri=0,defaults 0 0
/dev/sdb1 /disk1 ext3 defaults 0 0
/dev/sdc1 /disk2 ext3 defaults 0 0
/dev/sdd1 /disk3 ext3 defaults 0 0
[kaware3@rannatweb ~]$ iostat
Linux 2.6.18-92.1.6.el5PAE (rannatweb.com) 07/13/2008
avg-cpu: %user %nice %system %iowait %steal %idle
3.78 0.00 4.41 9.02 0.00 82.79
Device: tps Blk_read/s Blk_wrtn/s Blk_read Blk_wrtn
sda 90.93 1784.24 1401.45 2073549 1628690
sdb 156.49 1567.09 179.30 1821188 208368
sdc 47.39 443.82 565.21 515787 656864
sdd 0.06 0.88 0.01 1019 8
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[url]
[url]
[url]
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[url]
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[url]Work fine!
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Error is,
[an error occurred while processing this directive]
If I "uncheck" IncludesNOEXEC in Apache Global Configuration the error disappears, but the SSI doesn't work. If I check it the error is there, but the SSI works.
Here's what I have done so far,
Through WHM,
Main >> Service Configuration >> Apache Configuration,
Pre Main Include, Pre VirtualHost Include, Post VirtualHost Include,
I added,
Options +Includes
AddType text/html .htm
AddType text/html .html
AddOutputFilter INCLUDES .htm
AddOutputFilter INCLUDES .html
Options +ExecCGI
AddHandler cgi-script .cgi .pl
I also added this to the httpd.conf
<Directory "/">
Options +ExecCGI FollowSymLinks Includes IncludesNOEXEC Indexes -MultiViews SymLinksIfOwnerMatch
AllowOverride All
</Directory>
Options +ExecCGI
AddHandler cgi-script .cgi .pl
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Options +ExecCGI
AddHandler cgi-script .cgi .pl
in the .htaccess file
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