Sendmail | Name Server: 127.0.0.1: Host Not Found
Mar 20, 2007
I am running CentOS and everything is almost perfect, except when I try and send email via the sendmail smtp service the email gets bounced back with the following information:
The original message was received at Tue, 20 Mar 2007 15:27:26 -0700
from localhost.localdomain [127.0.0.1]
----- The following addresses had permanent fatal errors -----
<jkeller@<myrealdomaingoeshere>>
(reason: 550 Host unknown)
----- Transcript of session follows -----
550 5.1.2 <jkeller@<myrealdomaingoeshere>>... Host unknown (Name server: 127.0.0.1: host not found)
[-- Attachment #2 --]
[-- Type: message/delivery-status, Encoding: 7bit, Size: 0.3K --]
Reporting-MTA: dns; localhost.localdomain
Received-From-MTA: DNS; localhost.localdomain
Arrival-Date: Tue, 20 Mar 2007 15:27:26 -0700
I am able to send internal mail, meaning, mail within the internal netowork, but anything external get's kicked back. Thanks for the help.
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Feb 9, 2008
i create one vps by xen/hypervm
and i going to ssh this vps
and i want install cpanel for this vps
but:
-bash-3.00# wget[url]
--21:44:11-- [url]
=> `latest'
Resolving layer1.cpanel.net... failed: Host not found.
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Apr 29, 2015
I currently migrate from cpanel to plesk12. Everything is working fine, but the emails are no been received, I´m able to send, but not able to receive.
The error is this one:
Apr 29 16:40:14 server postfix/smtpd[26799]: connect from mail-oi0-f42.google.com[209.85.218.42]
Apr 29 16:40:24 server postfix/smtpd[26799]: warning: 42.218.85.209.combined.njabl.org: RBL lookup error: Host or domain name not found. Name service error for name=42.218.85.209.combined.njabl.org type=A: Host not found, try again
Apr 29 16:40:28 server courier-imapd: Connection, ip=[::ffff:52.11.197.15]
[Code] ....
I thinks it´s permission on the folder, but already run the code : /usr/local/psa/admin/sbin/mchk --with-spam
It did not solved, is there anything else I can do?
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Feb 6, 2007
My server (cPanel) can't sendmail (php code), I haven't received any email from cpanel also (create, suspend, terminate .... accounts).
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Apr 24, 2009
I currently have sendmail(mini_sendmail in chroot) running, and wanted to know how can I send the mail from php scripts to my e-mail server running exim/dovecot?
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Mar 18, 2007
I recently moved to virtual dedicated hosting for my website, mainly because I wanted a better mail server to work with to manage a mailing list.
I have a few PHP software scripts for different things: managing affiliates and email marketing.
I want to send mail using both of those via SMTP on my new server. They both have a place to type in the host and username/password.
The problem I am noticing is SASL Authentication. They attempt to connect to the host without any trouble. However, the affiliate software fails SASL Authentication every time I try to send an email or test the email system.
Email marketing software connects when I manually send a campaign. However, users are supposed to immediately receive a confirmation mail upon opting in. In this case, it shows up as an attempt in the mail log, but it fails SASL Authentication. I don't know if it's a problem with the software or not, since it attempts to connect but fails, yet connects successfully in other cases.
My question is this: Is there another way around this? I've contacted my host to double check on the appropriate username/password to pass authentication. I will also be contacting the software developers after I receive an answer.
But if nothing comes of it, is there any way around it? Is there a place where I can have it automatically authenticate if the email is coming from a certain user, or if the attempt is being made from the same server (everything sits on the same server, I use localhost in the software to connect to the mail server). Since I am the only person who has access to the server and uses it, it seems safe to automatically authenticate if the request is being asked by the server itself...
I'm just looking for other alternatives if the software does indeed have a problem and I cannot figure it out.
Keep in mind I am very new to all this server and root access. Just a few days ago I was on a shared hosting plan, so I didn't have any access to anything. With that in mind, I know very little about mail servers, although I've been learning more over the past few days. I only stumbled upon the mail logs on my server recently by browsing files in the control panel (I'm not familiar with SSH, although I do have access to it)
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May 11, 2008
I do not know where to post this, I recently changed Hosts.
My domain through GoDaddy was changed to my new account that was setup, The issue is everyone else can see my website but me and I am not sure why?
On my end I get Server Not Found?
I can see my site through a Proxy and also I have shown the site to a few people and they have no issues accessing it...
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May 17, 2008
I cant visit my website! <snipped> everytime I go it says server not found. So I told some friends to go and they are able to see and visit <snipped> How is that possible?? They could and I cant? Yesterday same thing but then couple hours later it worked I could visit hmlegends.com but i didnt do anything and now today same thing server not found! i cleaned my history everything and still server not found!
So what I did is used a proxy <snipped> and then it worked!
But then I dont use a proxy SERVER NOT FOUND! Its like my IP cant reach hmlegends.com
I dont know how to solve this?!?? It just says server not found!
But it looks like everyone else could access it!
Anyways im using Firefox 2 but then maybe i thought it was my browser so switched to 3 so currently on firefox 3
and no its not its something with my IP cuz when i use proxy i could go to my site
but point is i dont wanna use proxy i wanna use my IP to go to hmlegends.com
Also im using Dial Up Internet!
I use AOL Dialer to connect!
Aol Dialer 4.8.8.4
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Mar 21, 2008
After going back and forth with the folks that are supposed to be managing my server they finally checked and found an irc bot. Here is their message:
I have found a irc bot running on your server. The binaries are located at /var/lib/texmf/.dat/. You can see the tar file which the hacker uploaded at /var/lib/texmf/. I have changed the permissions to 000 so that you can verify the files.
The user of the files are nobody. Hence it is clear that the files were uploaded via url injection using some vulnerable script under some domain. Unfortunately there are no helpful logs to find the exact domains and the vulnerable script. It is certain that the files were first uploaded to /tmp and then moved from there. You can see some similar hack files at /tmp/.dat, /tmp/var and /tmp/.dev12. Also the permission of /var/lib/texmf/ was 777.
You should update all your web softwares to latest version so that they will include latest security patches. Also I will recommend you to enable mod_security in your server to prevent further hacks.
Let us know if you want this to be enabled.
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Apr 26, 2009
I'll try to make this long story short, but this morning I logged into one of my servers and it showed a read-only filesystem, which I thought my server guys could fix easily. So I put in a ticket. 6 hours later, they tell me that they think the OS is corrupted and I need a new install. They give me KVM over IP so I can go in and 'do' things. I tried to log in as root and it wouldn't let me, so they finally booted in single mode and I can get in and such. When I try to su - root, it tells me that user root can't be found. I also tried to ftp into and out of the server with no luck. I really need this box back up. If not, I need to get all the accounts saved off so that I can build a new box. Everything is there, so I don't want to give up yet.
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Nov 30, 2007
OK so I am running one powerful server. And have PlatinumServerManagement Manage it.
But Ever since I got this server The server never went down or anything like that due to high CPU usage or to many visitors.
But for some reason I am still getting emails from my members that once in a while they cant access the site because they get a "server not found error" I checked the server uptime and it never went down. The server has been up all the time. So I have no idea why these people can't access the website.
My first guess is that they are getting blocked by some security software on my server. But I talked with PlatinumServerManagement and it can't be that.
So does anyone know why they might not be able to see the websites all the times? but only some random times.
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Feb 14, 2008
Recently,Mysql has been a problem that is going down.So,I have to restart Mysql Service everyday. You can see for further information at here
Quote:
ERROR
Couldn't connect to database.
Please contact admin about this err. Back
DETAIL
2002 : Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock' (2)
This is the error when i restart Mysql Service via SSH
Quote:
ERROR! MySQL manager or server PID file could not be found!
Starting MySQL SUCCESS!
what i should do and give me a solution to kill this error
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Jan 14, 2015
Not sure what the problem is but I can't preview a new website using Quick Site Preview. I have configured Tools and Settings > Website Preview Settings > Quick Preview on a domain name in Plesk by selecting the server domain name, yet despite this when I go to a new domain I setup today and click preview I get a browser windows that says "Server Not Found".
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Aug 19, 2014
When i try to check my stats, i got this error : Not Found
The requested document was not found on this server.
URL : domaine.nld/plesk-stat/webstat/
I tried a lot of commands, to repair too..
# /usr/local/psa/admin/sbin/statistics --calculate-all
WARNING during statistics_collector execution: : Executing logs preparation...
But nothing... Always the same error.
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Aug 3, 2009
A few weeks back I changed the DNS for my personal website.
With that said, my work runs their own DNS, and for some reason I can only visit my domain name on and off...
For example, I might come into work one day and visit my domain:
[url]
It will work just fine... No connection problems. Then, a few hours later, I try to visit my site again and I get this error:
Quote:
Server not found
Firefox can't find the server at www.example.com.
Then a few/many hours later I can connect again with no problems!!!
Every computer/browser that I have tried in the building gives me this (or similar) error.
This connection problem happens very frequently, and it is on/off throughout the day.
I have narrowed it down to the domain name servers because when I use OpenDNS, I have not problems whatsoever.
Additionally, when I connect to my site from home, I never get this error.
Questions:
1. What do you think the problem is?
2. When approaching the IS dept. with this, what should I tell them is wrong?
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Apr 6, 2007
i have two issues:
1) I had disabled the php mail() function due to spam, but this has stopped so many hosted scripts to stop emailing their users... how do I enable that function again?
2) in a failed attempt to fix #1 (i thought it was sendmail which caused it) sendmail has stopped sending in or delivering emails... not quite sure why this happened eventhough I backed up sendmail before working on it and reverted back when i failed to resolve the issue?
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Aug 14, 2007
when I send mail with mail() function (on my forum ) I can't resieve it I have
when I execute tail -f /var/log/exim_mainlog
I have :
2007-08-14 17:29:43 1IKxOx-0002uq-Qi == nobody@server.XXXX.com R=localuser T=local_delivery defer (13): Permission denied: cannot create //mail
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Jul 31, 2007
My website is running of a windows server, and so doesn't let PHP sendmail work .
I only remembered this recently, and now know why I have been loosing out on clients.
Is there a work around to this? i.e possibly some sort of script that emulates the linux sendmail? Note: I don't have access to the windows server config, it is a shared hosting account.
As I was on windows and hated my hosts spam protection (took almost 3 hours for the spam filter to confirm safety of emails from gmail servers) I moved the email system to an external company, that now manages my pop3/smtp etc. (not sure if this makes any difference - but may as well explain it just incase)
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Aug 1, 2007
I have installed sendmail program on the server and when I try to send email to any external address, it is trying to connect to localhost. Am I missing anything here?
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Mar 31, 2008
I have found a bunch of articles to setup Sendmail as a mail relay, but none have been successful for me or the articles are very outdated. Anyone have a 'stupid-proof' set of current instructions on how setup Sendmail Pop before SMTP? This is a CentOS 4.5 Box with Sendmail 8.14.2/8.13.1 and Dovecot. Any successful guidance would be appreciated!
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Jul 14, 2009
how to which will help me to make a correct configuration of mail server. I want to set up a mail server with e.g three domain names and all three domain names will have few similar email addresses like info, sales, marketing and so on. I know that this can be done by using control panels but I am not big fan of control panels I want to do a pure Linux administration using the command line.
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Mar 19, 2009
I haven't used Sendmail in a while and would like to clarify a specific setup.
Suppose we have a box hosting a handful of clients, thus it is a Shared setup.
Suppose we have Sendmail sendmail-8.13.1-3.3.el4 on a CentOS 4.7 Final installed with 0 extra configuration other than the default one.
Such setup allows on to relay via the localhost method through php/cgi scripts or even manually through sendmail binary.
Ideal setup would be one where I would have the ability to specify into a file, the usernames allowed to relay email. E.g
if /etc/passwd contains
user1
user2
user3
user3
baduser
user6
spaminguser
than ideally I'd like to pick 'baduser' + 'spaminguser' and disallow them the ability to relay through the localhost.
I should not know anything about their domains or where they are sending.
A general directory setup might be
/home/user1/domain1.com
/home/user1/domain2.com
/home/user1/domain3.com
/home/user2/domain.com
/home/user2/sub.domain.com
etc.
Thus, the server has 0 more than a barebones installation of Sendmail with the following configuration
----------------------------------------------
divert(-1)dnl
include(`/usr/share/sendmail-cf/m4/cf.m4')dnl
VERSIONID(`setup for Red Hat Linux')dnl
OSTYPE(`linux')dnl
define(`confDEF_USER_ID',``8:12'')dnl
define(`confTO_CONNECT', `1m')dnl
define(`confTRY_NULL_MX_LIST',true)dnl
define(`confDONT_PROBE_INTERFACES',true)dnl
define(`PROCMAIL_MAILER_PATH',`/usr/bin/procmail')dnl
define(`ALIAS_FILE', `/etc/aliases')dnl
define(`STATUS_FILE', `/var/log/mail/statistics')dnl
define(`UUCP_MAILER_MAX', `2000000')dnl
define(`confUSERDB_SPEC', `/etc/mail/userdb.db')dnl
define(`confPRIVACY_FLAGS', `authwarnings,novrfy,noexpn,restrictqrun')dnl
define(`confAUTH_OPTIONS', `A')dnl
define(`confTO_IDENT', `0')dnl
FEATURE(`no_default_msa',`dnl')dnl
FEATURE(`smrsh',`/usr/sbin/smrsh')dnl
FEATURE(`mailertable',`hash -o /etc/mail/mailertable.db')dnl
FEATURE(`virtusertable',`hash -o /etc/mail/virtusertable.db')dnl
FEATURE(redirect)dnl
FEATURE(always_add_domain)dnl
FEATURE(use_cw_file)dnl
FEATURE(use_ct_file)dnl
FEATURE(local_procmail,`',`procmail -t -Y -a $h -d $u')dnl
FEATURE(`access_db',`hash -T<TMPF> -o /etc/mail/access.db')dnl
FEATURE(`blacklist_recipients')dnl
EXPOSED_USER(`root')dnl
DAEMON_OPTIONS(`Port=smtp,Addr=127.0.0.1, Name=MTA')dnl
FEATURE(`accept_unresolvable_domains')dnl
LOCAL_DOMAIN(`localhost.localdomain')dnl
MAILER(smtp)dnl
MAILER(procmail)dnl
---------------------------------------------------------------------
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