FedoraCore2 - Cannot Telnet Out To Port 25, So Cant Send Email

Jun 23, 2005

if i try to telnet to yahoo's mail server, i get this:

[root: #] telnet mx1.mail.yahoo.com 25
telnet: connect to address Connection timed out
telnet: connect to address No route to host
telnet: connect to address No route to host
telnet: connect to address No route to host

but it works from one of my other hosted servers.
this keeps mail building up in my queue as it cannot send mail out cause the connection times out.

I can telnet locally to send myself email. This is my own dedicated server.

i have no idea whats up - default policy is ACCEPT in the OUTPUT chain of iptables.

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/etc/xinetd.d/telnet Doesn't Exist To Disable Telnet

Sep 21, 2007

I decided to disable Telnet in my server. I get an Article ::

1. Login to your server through SSH and su to root.
2. Type pico /etc/xinetd.d/telnet
3. Look for the line: disable = no and replace with disable = yes
4. Now restart the inetd service: /etc/rc.d/init.d/xinetd restart
5. Turn off it through chkconfig as well because it can still start through that.
/sbin/chkconfig telnet off
6. Scan your server to ensure port 23 is closed.
nmap -sT -O localhost

Also run ps -aux | grep telnet and if you find anything other than "grep telnet" as result kill the process.

But /etc/xinetd.d/telnet doesn't exist in my server.

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Feb 19, 2008

Currently I am using Linux + cPAnel and using the port 25 for email sevrer. Currently we facing 1 problem is, some user's ISP is not support port. May I know how can I add additional port into server and allow users to send mail by different port?

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May 28, 2015

I'm having difficulty sending an email to another email address (with a different domain) which is on the same VPS.The trouble is, on the other domain's VPS control panel, within the DNS settings, the MX records have been pointed externally (to an exchange server). Their email is turned off. But bizarrely, their mailbox is full.

It seems as though Plesk is ignoring the MX records, and sending MY email internally to the OTHER domain's mailbox on the same VPS.How do I get Plesk to send my mail to the correct EXTERNAL MX records?

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Dec 11, 2007

A email account can send email, but cannot receive email, why? How do I know the answer why?

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Nov 5, 2009

Receiving works fine, but unable to send email from the server
Here are the error messages
dovecot_login authenticator failed for localhost []: 435 Unable to authenticate


error message in horde
There was an error sending your message: authentication failure [SMTP: Invalid response code received from server (code: 435, response: Unable to authenticate at present)]

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Feb 25, 2008

We are running an application on IIS that sends out 4-500 emails per day via a smarthost, but nearly 11,000 every weekend. None of this is bulk mail...

We need a new smarthost provider ASAP, as our current host is discontinuing this service this week, and we were just notified.

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Cant Send Email To Hotmail

Nov 23, 2007

all email servers (gmail, mail.com , ...) accept emails coming from my server only hotmail doesn't reicive

when I run this command in SSH : echo "test mail" | mail -s "test" xxxx@hotmail.com

I have in my exim_mainlog :

PHP Code:

7-09-12 13:44:11 1IVPhb-0008Cm-Rz <= root@server.xxxxx.com U=root P=local S=3822007-11-24 13:44:12 1IVPhb-0008Cm-Rz => xxxx@hotmail.com R=lookuphost T=remote_smtp H=mx4.hotmail.com []2007-11-24 13:44:12 1IVPhb-0008Cm-Rz Completed2007-11-24 13:44:29 1IVPht-0008D9-UC <= root@server.*********** U=root P=local S=3822007-11-24 13:44:30 1IVPht-0008D9-UC => xxxx@hotmail.com R=lookuphost T=remote_smtp H=mx1.hotmail.com []2007-11-24 13:44:30 1IVPht-0008D9-UC Completed2 1IVPhb-0008Cm-Rz => xxxx@hotmail.com R=lookuphost T=remote_smtp H=mx4.hotmail.com []2007-11-24 13:44:12 1IVPhb-0008Cm-Rz Completed 

telnet mx4.hotmail.com 25 give :

PHP Code:

[root@server ~]# telnet mx4.hotmail.com 25Trying to mx4.hotmail.com ( character is '^]'.220 bay0-mc10-f4.bay0.hotmail.com Sending unsolicited commercial or bulk e-mail to Microsoft's computer network is prohibited. Other restrictions are found at http://privacy.msn.com/Anti-spam/. Violations will result in use of equipment located in California and other states. Wed, 12 Sep 2007 03:49:15 -0700 

my datacenter reply me :

PHP Code:

Hello,We have investigated your issue in detail. We tried to sent mails from the server to our Softlayer hotmail account. From the logs, it is clear that the mails are sent successfully from the server.=========2007-11-23 23:50:29 1IviI1-0001De-SX <= root@server.XXXX.net U=root P=local S=3612007-11-23 23:50:30 1IviI1-0001De-SX => XXXX@hotmail.com R=lookuphost T=remote_smtp H=mx3.hotmail.com []2007-11-23 23:50:30 1IviI1-0001De-SX Completed========But this is not received at the hotmail mailbox. Hence this is an issue at their end. You may contact the hotmail support to resolve this.Regarding the spamming, we could find a lot of mails from the user nobody. You can prevent the user nobody from sending the mail from WHM as follows.Please select the option "Prevent the user "nobody" from sending out mail to remote addresses" from WHM >> Main >> Server Configuration >> Tweak Settings >> Mail option.

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Aug 27, 2007

I couldnt send email via my website , and occur error:

Persits.MailSender.4error '800a0015'
Logon failure: unknown user name or bad password. /includes/email_functions.asp, line 349

how to resolve it?

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Jun 21, 2007

I currently have a vps, just name it myvps.com (not subname.myvps.com).

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Aug 25, 2007

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Dec 10, 2007

SPF correct
DNS correct
Submitted to sender ID 2 weeks ago
Mail server tested to other mail clients all ok
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DNStools test: reverse dns, all ok
Blacklists checked. Im not on it

I cant find any reason anymore why my mails dont arrive.

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Oct 19, 2007

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it's because I saw many return emails saying that the emails sent out to their inbox are consider spam. I mean a lot for instance within 1 second, there are more than 10 mails.

Can someone help explains me how I can find the culprit and fix the problem?

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Oct 22, 2008

way to send up to a few thousand emails per day.

These emails are simply replies to people contacting me first then I reply with ONE message from an autoresponder. No further contact is made unless they write me back again.

This is not really something that would work with aweber, getresponse, or a similar service.

And most email service providers seem to have a limit of 250/messages a day.

I'm guessing I will need a dedicated server for this?

Anything else I need on the dedicated server? I only have a few mailbox accounts I use that I access via outlook.

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Jul 27, 2008

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I tried to send email through command line but it does not work either.

[root@ip-xx-xxx-xxx-xxx public_html]# /usr/lib/sendmail -v myemail@hotmail.com < /home/mysite/public_html/license.txt
myemail@hotmail.com... Connecting to [] via relay...
220 ip-xx-xxx-xxx-xxx.ip.secureserver.net ESMTP Sendmail 8.13.1/8.13.1; Sun, 27 Jul 2008 09:21:09 -0700
>>> EHLO ip-xx-xxx-xxx-xxx.ip.secureserver.net
250-ip-xx-xxx-xxx-xxx.ip.secureserver.net Hello ip-xx-xxx-xxx-xxx.ip.secureserver.net [], pleased to meet you
250 HELP
>>> MAIL From:<root@ip-xx-xxx-xxx-xxx.ip.secureserver.net> SIZE=15127 AUTH=root@ip-xx-xxx-xxx-xxx.ip.secureserver.net
250 2.1.0 <root@ip-xx-xxx-xxx-xxx.ip.secureserver.net>... Sender ok
>>> RCPT To:<myemail@hotmail.com>
>>> DATA
250 2.1.5 <myemail@hotmail.com>... Recipient ok
354 Enter mail, end with "." on a line by itself
>>> .
250 2.0.0 m6RGL99A018025 Message accepted for delivery
myemail@hotmail.com... Sent (m6RGL99A018025 Message accepted for delivery)
Closing connection to []
>>> QUIT
221 2.0.0 ip-xx-xxx-xxx-xxx.ip.secureserver.net closing connection
[root@ip-xx-xxx-xxx-xxx public_html]#

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Sep 8, 2007

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Delivery attempt for Message ID 1ITmWS-0001u4-QJ
Message 1ITmWS-0001u4-QJ is no longer frozen
delivering 1ITmWS-0001u4-QJ
lowest numbered MX record points to local host: domain.com
== myemail@domain.com R=lookuphost defer (-1): lowest numbered MX record points to local host

Return to Mail Queue

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Apr 24, 2007

I recently moved a site from a hosting company to a VPS. I updated the name servers with the domain name registrar and the transfer went smoothly.

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Jul 25, 2007

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I'm running a Plesk 8.1.1 & 8.2.0 server configuration..

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Jul 2, 2007

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I don't think my host 1AND1 would be too happy if I used their mail servers to send over 50,000 emails.

What do you guys recommend? Sending a few thousand emails a day for a month? Are there any services dedicated to sending emails in bulk?

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Jul 29, 2007

I just enabled SMTP on my box, and tried requesting a loss password on my website, i get this error.


Warning: mail() [function.mail]: Failed to connect to mailserver at "localhost" port 25, verify your "SMTP" and "smtp_port" setting in php.ini or use ini_set()

How do i get rid of this error.

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Jan 29, 2007

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May 5, 2008

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@NS ns1.domainregistrar.com
@NS ns2.domainregistrar.com
webmailCNAME ghs.google.com3600
@A **serverip**3600
ftpA **serverip**3600
wwwA **serverip**3600
*A **serverip**3600

I can send and receive, but no emails arrive, probably because the registrar has a resolve issue?

Site is also down.

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Nov 7, 2008

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Is there anythighn I can do (like change the post my mail server uses to 587) so that I can send outbound mail from my server with outlook (over Comcast connection) or am I just stuck now with using web mail?

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Apr 20, 2007

Here is what happened:

We have been running our web/ftp/application/mail server for about 4 years, and running flawlessly. This week one of the computers in the network was infected with a virus that was sending spam like crazy. We got blacklisted, as per this site mxtoolbox.com. Our domain is affordablerto.net. Since then we have isolated the problem, klilled the virus and are no longer blacklisted. But we are not able to send or receive any emails now. I wrote mxtoolbox and there reply was basicly "We can get you up and running if you pay us". I called our ISP and they stated that the ports(25) are open. When I do an smtp diagnostic from mxtoolbox I get the response that Argument 'Length' must be greater or equal to zero.

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When I put in our mail server under mail test I get this Getting MX record for mail.affordablerto.net (from local DNS server, may be cached)... There is no MX record for mail.affordablerto.net! That's bad. Checking for an A record... Got it!

When I put in our domain I get this...well I can not put a link in yet - the software here says I need to take 5 posts before I can link anything. Go ahead and try it yourself.

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Sep 4, 2007

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Nov 25, 2007

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but if i send email from my hotmail email to my domian name email i get it

so i make some research on the net i find something maybe this could be the problem but as i am newbie to the server i have no idea how i can fix this problem


set reverse DNS for your IP address and if possible an SPF record for your domain.

as you can see he is asking me to set the dns etc i dont no . is there anything i could do via WHM/CP/SSL"PuTTy" etc

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Jun 30, 2007

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