My problem is that when i try to open port 25 with telenet it takes lot of time like more than 1 minute to open session and another 30 - 40 seconds to respond to "ehlo" command.
Also when i try to open telnet session on port 25 in another server it hardly takes 1-2 seconds open session.
I cannot get either sendmail or postfix to send a 220 response, nor respond with details. See below for sample telnet output. Details: I have a server that requires email, but only for light use. I'm definitely not an expert, but I have set up a sendmail configuration on a previous server. I tried to configure sendmail first and then postfix later, when I couldn't get sendmail working. I'm not sure exactly what the problem is, but I have a feeling the following might yield some important information. Note: this is the result for Postfix, but virtually the same thing happened with sendmail, too. That is, initially the telnet connection would close immediately. Afterwords, I could connect a second time but then it never responded with a 220 banner nor any 250's.
possible to run Qmail and Sendmail on one server, both on another port? I need qmail for Plesk and sendmail for OpenEMM Now qmail is working for plesk, but if I install qmail ( I tried install it also from source) and try to run sendmail, I still get this error: Starting sendmails: listener sendmail: illegal option -- q chich probably means, that there isnt full sendmail version.
I have configured a sendmail MTA for incoming mails in a network and by using IPtables i have redirected the traffic internally to other port where one more SMTP by a application is running.Iptables rule:
I am new to Linux, moreso to CentOS, but I can definitely follow walk-throughs and tutorials easily enough. I am installing a webserver for our small business and decided to go the postfix/dovecot route.
I installed everything based on the walkthrough on linuxmailcom and eve put squirrelmail on top, so users can access via webmail. I am able to send mail just fine, users/folders are setup and working as they should for sending, but I am unable to receive any mail. MX records have been updated to direct mail @mydomain to this mailserver machine. The problem I am having is with port 25... If I do 'telnet x.x.x.x 25' I get no response, just a timeout then back to command prompt. My other ports are fine, and I get the banner for each 110, 143, etc... all ports but 25 work internally and externally, forwarded.
I tried turning off firewall rules, and still, nothing from port 25. Should I try to have postfix listen on another port by editing its' master.cf, or is this is problem with my centOS/Linux instead. I didn't know where to go with this, so I thought the best place to start was here.
when I try to access any page even small html pages it stays like 3 seconds in HTTP request sent; waiting for response. state..even when I use Lynx locally on the server..bypassing any possible network issues..logs dont show a thing..the server itself is a high end server with nothing running on it apart from apache which is not serving anny clients now, firewall is disabled and hostnamelookups are set to OFF.
I have Fedora 11 installed on a Dell Precision M60 lap-top, running KDE. I've used KDE for years, but a number of issues with KDE 4 had forced me to look at alternatives recently. With F11, KDE 4 seems to be getting more functional, being more or less usable for real work... However, a couple weeks ago, I ran "yum update" and picked up KDE 4.3.1, and while it seems to have fixed a few more things, there also seems to be a regression in terms of performance - on this lap-top anyway.
Basically any window operation -- opening a new one, moving, resizing, even moving the mouse from one window to another (I use auto-focus) -- is slow, and during this time the CPU load from the "X" process becomes very high -- close to 100% according to "top". When not "touching" any windows, CPU load goes back to normal. I did run across some advice to turn off desktop effects, which I did -- it reduced the sluggish response slightly, but the problem is still present. And I had the same settings before the update, and performance was fine.
Here is some info about this machine: Dell Precision M60 lap-top CPU: Intel(R) Pentium(R) M processor 1.70GHz RAM: 1 GiB (not a lot by today's standards, but this issue does not seem related to swapping) video: nVidia Quadro FX Go700 (using default installation, nouveau driver) display: 1920 x 1200 kernel: 2.6.30.5-43.fc11.i586 KDE: kdebase-4.3.1-2.fc11.i586 nouveau: xorg-x11-drv-nouveau-0.0.12-40.20090528git0c17b87.fc11.i586
My Kubuntu installation (9.10) boots up normally and seems to run fine, other than it is very slow to respond to inputs or change screens/ applications etc. It can take 5-10 seconds to respond to simple requests like changing from firefox to dolphin by clicking in the taskbar. It is dual boot with XP, which also seems sluggish, but is bearable.
The computer is barely useable in Kubuntu because of the slow response. I had 9.04 installed before, same problem. I tried searching for drivers for the on board video, thinking that might be it, but came up empty.
I know this doesn't matter to most people because most people hold shift to capitalize letters. I tap the caps lock with my pinky whenever I need something capitalized. I'm a pretty fast typer, I just don't type correctly. How do I get it so that when I'm typing and I hit Caps Lock for it to be an instant effect? For example this is what I'm getting annoyed with, here is an example of what I am having to recorrect everytime I type.
I have an Ubuntu 10.04 server here, and this week internet sharing got too slow... i dunno if it is a squid problem... but it's too slow. And when i try to registar a domain for that server, bind gives do response. If i dig my server inside lan, it's working pretty well.
I am having some issues with the typing speed in gedit. When typing the response is usually really slow,It can be up to a second or so between rendering keystrokes. I don't believe it has anything to do with resources. I have checked the processes running when it happens and everything looks pretty normal cpu usuage is also very low at the time. The system is very responsive with everything else at the time.
I only have this problem with gedit, gvim, vim, nano etc are fine. Maybe an issue with a GTK lib of some sort? The problem happens with very small files like little bash scripts. I have including some info about the system ...
While Blender 2.5 may be stable, the Python API is not. According to the Blender website... Note: The Blender Python API has areas which are still in development. The following areas are subject to change. -operator behavior, names and arguments -mesh creation and editing functions.
I am running Wheezy on a Lenovo ThinkPad W530. When using the hotkeys to control screen brightness (Fn+F8/9) there is a 10-30 sec delay before the screen changes.
From Brightness Settings it changes instantaneously. It seems to be the same issue as this. I tried the fix in comment #5.
I added "acpi_backlight=vendor" to GRUB_CMDLINE_LINUX_DEFAULT in /etc/default/grub then ran update-grub. After restarting I could not control the screen brightness at all.
I have opensuse 11.3 (64 bit) with nvidia 8400GS (256 MB ram). The system is a core 2 T7500 with 4GB Ram. I have installed nvidia drives (through nvidia's .run file, versison 256.35)
1) When i connect an external monitor (1440x900) and use separate x-screen+ xinerama (laptop has 1280x800), desktop response is really slow. Moving windows,switch tabs etc make desktop (kde) barely useful. Especially if i open a large txt file it is almost impossible to scroll through this file.
xorg file (see attached file) is been created by nvidia-settings.
One minor solution I found is to use 16 bit (instead of 24bit) color. This makes everything better, but still not fast enough. I do not use desktop effects.
An important note: This happens only after some period of time. After reboot everything seems to be ok for some time, but suddenly something changes and I have slow response.
I do not have the same problem under windows.
2) How can i specify that laptop's screen be the default, so it can have the taskbar?
3) When i disconnect the external monitor and restart x, then the laptop screen goes to 1024x768 and not to 1280x800. I have to create another xorg.conf and restart x. How can I make just one xorg file, and the system automatically adjust resolutions regarding if i have one or dual monitors?
Code: # nvidia-settings: X configuration file generated by nvidia-settings # nvidia-settings: version 256.35 (buildmeister@builder97.nvidia.com) Wed Jun 16 19:14:45 PDT 2010 Section "ServerLayout"
I'm a little stumped on this one so I reaching out to see if anyone here has any idea. I just changed my ISP to Surewest as they're doing fiber straight to the house in my area so I have 8Mbps up and down.
I have my linux box running openssh and I have no problems SSHing into it from my remote laptop at work. I use putty to connect to it and create a tunnel so I can configure my firefox to use it as a SOCKS proxy. The problem is my response time for page loads in firefox is atrocious now. It'll take over a minute to load yahoo.com. The only real differences in my setup now are my ISP and router hardware at home. Previously, I was using the firewall that was built into my AT&T Uverse gateway. Now, I'm using my old Linksys WRT54G v5.0 router with the latest firmware. My linux box is wired directly into it with ethernet. When I run the speed tests from that box I get my correct speeds of 8Mbps up and down with <15ms ping. From what I can tell, all of my router settings are correct.
I've noticed over the past few months that my internet connection speed (D/Ls, browsing) are getting incredibly slow, but only on my linux box (my laptop, for instance, is fine - in fact, I'm dual-booting with WinXP and it isn't happening there, so I think I've managed to narrow it down to the OS alone):
My notebook is using intel core 2 duo T6400 CPU and 2GB Ram, when I am playing MP3 with Amarok and at the same time running Firefox, the computer tends to hang and slow in response to open new website.IS it due to my hardware?
firstly it took a very long time to display the browser.After the browser was working on my localmachine it took really long time to show the response.I am doing all this on internet and the server has bandwidth as 6Mbps and my internet connection has a speed 1Mbps what could be the reason for such a slow response.The same exists in case of Chromium is there a way to make it fast.Ubuntu 10.04 server edition and ssh2.
I am using webmin for my daily tasks. I have fedora 13, whenever I click on ''Sendmail M4 Configuration'' or Outgoing Addresses (generics)'' I get the following error message
Quote:
The Sendmail M4 configuration base directory /usr/share/sendmail-cf was not found on your system, or is not the correct directory. Maybe it has not been installed (common for packaged installs of Sendmail), or the module config is incorrect. I read documentation at sendmail.org, it seems that structure of directories for send mail has been changed in version sendmail-8.1.4 shipped with FC13. In webmin config module we have
Quote:
Sendmail M4 base directory = /usr/share/sendmail-cf
which is not there. I did a locate / sendmail-cf on the command line, it finds nothing
I recently modified sendmail.cf to use a third party SMTP server to send emails. It works great. But when I run sendmail from the command line, I have to specify the -C flag and force feed it the location of my sendmail.cf, or else it doesn't work.
So in other words, the following works great:
However, if I don't specify the -C flag, sendmail doesn't consider what's in the sendmail.cf and barfs:
I don't run sendmail as a daemon. I'm only using it to send emails. I know my modifications of sendmail.cf are correct because it works perfectly when I use the -C flag. I searched my disk to see if I could find another sendmail.cf on the machine and only the one in /etc/mail came up.
Why sendmail is not reading my sendmail.cf?
I'm running Sendmail version 8.14.2 on Fedora Core 8.
I have been trying all day today to setup a sendmail SMTP server on our Red Hat 5.5 dev box. We have 2 network cards, 1 to the local network with a 192.168 prefix and an external card which goes out to the web through a BT leased line through a Cisco router.
First I followed one of the many helpful tutorials online to setup sendmail, installed all the required packages and made a couple of small config changes to allow the service to listen on all IP addresses rather than just the localhost 127.0.0.1.
The main change is in the /etc/mail/sendmail.mc file where I have changed the following line;
I have tried removing Addr completely, setting to either the local or external IP and then rebuilding the sendmail file using 'make -C /etc/mail' and then restarting using 'service sendmail restart'
The SMTP port has been added into the firewall and it is showing to be listening on IP 0.0.0.0:25 which I believe means it is listening on all IP's assigned to the machine, sendmail is also in listen mode and running correctly.
Finally I have changed the /etc/mail/access file to include the local IP range 192.168 and external IP range and rebuilt this into the /etc/mail/access.db file and then restarted sendmail.
Googling the error all the sites I have found talk about making sure the 'DAEMON_OPTIONS(`Port=smtp,Addr=x.x.x.x, Name=MTA')dnl' line is uncommented and not much else in terms of what else might be incorrect.
I am starting to run out of ideas on things to change or check, telnet works correctly on other ports on the same server, ie httpd for apache on port 80. I have also rebooted the server to make sure that it wasn't something odd happening.
I changed the host name on this CentOS 5.5 machine but whenever I reboot the machine the startup pauses at the point of starting sendmail for several minutes and then eventually moves on. What could be causing this?
I have a mail server i need it to send message via port 587 not port 25, i make some changes to my postfix server which i use and it is already successed making a telnet to 587 port like it :
I have changed over to AT&T U-verse. I need help getting my sendmail able to send out.
From AT&T website Incoming mail port number: 995 (make sure secure connection (SSL) is checked) Outgoing mail port number: 465 (make sure secure connection (SSL) is checked)
how to setup sendmail to use SSL , userid,password and port 465 ?
I've got a DNS problem I cannot figure out. I've been digging and pinging all day and I've waited for caches to expire and I'm not having much luck.From my desktop mac, I can't seem to resolve mail.port-o-call.net:
I need to set an auto response on my linux email server (ubuntu9),for a person who will be on leave, Perfectpol is out office for a while, if urgent please call office number 222 2222 222.how do i go about setting this. The email address of the user who will be away is perfectpol@mycompany.com.
I have followed this guide [URL] to setup a diskless cluster based on ubuntu server. Every thing is fine in the boot process except this:
After the client boots vmlinuz and init.rd, I see some information and after a minute I see:
Code: IP-Config: no response after 60 secs - giving up /init: .: line 3: can't open /tmp/net-eth0.conf kernel panic - not syncing: Attempted to kill init!
It is strange since it gets an ip address when it want to boot. I don't know what is wrong with it.
