Displaying 20 results from an estimated 900 matches similar to: "Performance tuning questions for mail server"
2013 Aug 14
12
xen 4.3 - bridge with bonding under Debian Wheezy
Hi all,
i have a xen 4.3 installation and would like to have a bridge bond szenario:
***
eth0 eth1
| |
bond0
|
br0
|
vif = [ ''bridge=br0,mac=xx:xx:xx:xx:xx:xx'' ]
***
With the network script in debian wheezy
***
/etc/network/interfaces
auto bond0
iface bond0 inet manual
slaves eth0 eth1
2004 Mar 01
0
logs strangers...
Hi !
I''ve a router linux with 3 eths in order to share
internet connection:
1:lo
2:eth0-> Internet Connection (DHCP)
3:eth1-> gateway wired hosts -> 192.168.101.254
4:eth2-> gateway wireless hosts -> 192.168.212.254 / 192.168.230.254 /
192.168.210.254 / ...
eth2 haves diferents IP Aliasings because it connect to
a switch which connect 4 access points (linksys), each
2013 May 21
1
samba4 AD - strange slowness after enable iptables based firewall
Hi; I sucesyfully ran AD on samba4 software. All required by me
functions works properly but when I turn on firewall my enviroment is
getting very slow - logon process is 3 times longer then on system
with disabled firewall service. Below I pasted my firewall
configuration - I based on samba tutorial and aexples and official
microsoft web page with needed ports:
Have you similar problems after
2012 Aug 13
1
iptables: cannot port forward
Easy question here: I have a test network that looks like this
(apologies for my lack of ascii skills):
[hostc]---------------[Firewall]192.168.42.1 (EXTIF: eth0) /10.0.0.1
(INTIF: eth1)
192.168.42.10 (wan) |(lan)
|
+-------------[hosta] 10.0.0.10 (port 4242)
|
+-------------[hostb]
2011 Nov 02
0
general protection errors
Hi,
Some time ago I sent a message about some general protection errors,
and didn't receive a response. I hoped I could post again and that
someone might have some ideas. I really don't think it is a hardware
problem producing these errors, but am otherwise out of ideas.
I'm having a problem with a fedora15 x86_64 host with a fedora15
x86_64 guest on a Xeon E3-1240 with 8GB RAM on
2015 Mar 02
0
Update
in /etc/sysctlsysctl.conf
net.ipv6.conf.all.accept_ra = 1
net.ipv6.conf.all.autoconf = 1
net.ipv6.conf.eth0.accept_ra = 1
net.ipv6.conf.eth0.autoconf = 1
when i run cat /etc/sysctl.conf | grep ipv6
#net.ipv6.conf.all.forwarding=1
#net.ipv6.conf.all.accept_redirects = 0
#net.ipv6.conf.all.accept_source_route = 0
net.ipv6.conf.all.accept_ra = 1
net.ipv6.conf.all.autoconf = 1
2003 Feb 03
4
[Bug 40] system hangs, Availability problems, maybe conntrack bug, possible reason here.
https://bugzilla.netfilter.org/cgi-bin/bugzilla/show_bug.cgi?id=40
laforge@netfilter.org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
------- Additional Comments From laforge@netfilter.org 2003-02-03 16:49 -------
We haven't seen this
2011 Oct 19
0
general protection and other errors
Hi,
I'm having a problem with a fedora15 x86_64 host with a fedora15
x86_64 guest on a Xeon E3-1240 with 8GB RAM on the guest. This is the
only guest. The server is configured as a mail server, using
spamassassin, postfix, amavisd, and clamav.
It was previously running without error on different hardware. I
migrated the disks to a more powerful server due to load. It's a new
server, and
2013 Jan 04
4
CentOS 6.3 as Firewall/Router
I'm replacing an ancient Solaris 'ipf' firewall/router with a brand new
CentOS 6.3 system. In the olden days, I successfully used the attached
iptables script (as /etc/rc.local) on Red Hat 5.x systems, but this
doesn't seem to be quite working on the new system.
Specifically, while it seems to be routing ok, you cannot connect to
anything on the inside net (e.g., with ssh or
2005 Jul 01
0
split access & fwmark
Hi,
I had a nice router which was able to split my outgoing webtraffic over a
dsl line,
then I got a power failure and now my settings are lost and I don''t get it
to run.
I''ve configured a iptable rule like:
/sbin/iptables -A PREROUTING -t mangle -i eth1 -s 192.168.1.10 -p TCP
--dport 80 -j MARK --set-mark 1
and
ip rule add fwmark 1 lookup 10
ip route add default via
2015 Apr 26
2
Route traffic through private IP for only certain hosts
Hi
I am having a weird problem which I cant figure out - so I was hoping
someone here could give me a hand.
First off the end goal is that a specific server in my network runs an
IPSEC connection to another company and I want all other servers to route
traffic for the IP on that network through this single server.
Server 1 in this example is the server that runs the IPSEC connection.
(CentOS
2012 Mar 21
1
Dovecot 1.2.9 Crash, NFS
Hi,
I'm stuck with a problem we have with dovecot.
My suspicion is, that it has to do with accessing the same mailbox/mail stored on a NFS-share from two machines at the same time.
setup
We have to mail servers running, both run a Ubuntu 10.04, Postfix 2.70 and Dovecot 1.2.9.
The mailboxes are stored in maildir format on a NFS-Share.
In front of those to mail servers we have a load
2007 Jun 19
1
Routing cache and the missing redirect flag
Hello,
Should "route -C" show the RTCF_REDIRECTED flag ? (0x00040000). I had
searched in the code and it seems that it should show this flag by "r".
However, I could not show this flag by "route -c " even that it
should have been there.
I have the following scenario where I have this flag set. I see it in
cat /proc/net/rt_cache but **not** in route -C.
(BTW,
2011 Oct 28
2
Inspecting VMware OVFs
Hi,
Maybe this is just a newbie question. I am trying to inspect VMware images
with guestfish.
I am running Fedora 15 in a VSphere VM. Once Fedora is installed I do:
yum update
yum install '*guestf*'
Then I run guesfish on a copy of a Fedora 15 disk.
guestfish -rw -I -a Fedora15-2-disk1.vmdk
with the following result:
libguestfs: error: unexpected end of file
2009 Aug 09
2
fatal: no SASL authentication mechanisms
Hi,
I have setup freebsd, postfix, dovecot and maia, but all the time i get the
following error in /var/log/maillog - and i cant google me to the solution,
please advice.
Aug 9 12:18:49 mail02 dovecot: auth(default): Authentication client trying
to connect to master socket
Aug 9 12:18:49 mail02 postfix/smtpd[1356]: fatal: no SASL authentication
mechanisms
Aug 9 12:18:50 mail02
2008 Feb 29
5
shorewall-perl not handling "logmartians" correctly
I''ve set up a simple 2-interface Linux router using shorewall-perl 4.0.8
(and upgraded to 4.0.9). Everything works flawlessly. One small
exception I have noticed (since I''m a new shorewall user I
assume this is probably an error on my part).
1. Problem:
With no "logmartians" entries in /etc/shorewall/interfaces,
shorewall-perl sets
2012 Jan 06
1
ACL with IMAP proxying
Hello,
I'm trying to use ACLs to restrict subscription on public mailboxes, but
I went into trouble.
My setup is made of two servers, and users are shared between them via a
proxy. User authentication is done with LDAP, and credentials aren't
shared between the mailservers. Instead, the proxies are using master
password.
The thing is that when the ACLs are checked, it actually doesn't
2016 Dec 16
1
service(indexer-worker): child 18977 killed with signal 11 (core dumped)
Hello to everybody,
first of all: thanks a lot for your hard work and for this nice piece
of software!
After many search about the following SIGSEGV, I decide to post the backtrace
and I hope to have avoided duplicated thread.
The problem arise after I enable clucene fts. I tryed the clucene ports version
(I am using OpenBSD) and a fixed version from github
(Blue-Rocket/clucene::feature/pod)
2014 Dec 09
0
all.accept_redirects force disabled with libvirt
Hi All,
I was having trouble to enable all.accept_redirects due to our network
structure, we have to enable it, but all libvirt installed machines
contain this setting:
net.ipv4.conf.all.accept_redirects = 0
I even use sysctl.conf to force to enable it, still no go, anyone know why?
--
Thomas Lau
Director of Infrastructure
Tetrion Capital Limited
Direct: +852-3976-8903
Mobile: +852-9323-9670
2011 Oct 19
5
doveadm segfaults on TCP connect - version 2.0.15
Hi list,
I just recently installed Dovecot 2.0.15. Unfortunately, doveadm segfaults
when I attempt to connect to the local dovecot instance. When this occurs,
my logs show:
2011-10-19T12:31:23-07:00 mail02 dovecot: doveadm: Error: doveadm client
not compatible with this server (mixed old and new binaries?)
I am using the settings listed on the wiki page
http://wiki2.dovecot.org/Director
[root