Spammers Use My Server To Send Out Email

Oct 19, 2007

I think someone has successfully make my server to send out emails. Why i know this?

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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How To Stop Spammers From Using Your Domain/email To Send Out Spam?

May 15, 2008

I've been getting a lot of "Undeliverable" emails sent to my email address. On these messages, the spammer is using my email on the "From" part of the email...... So whenever he sends out spam, the person(s) getting spammed think it's from me..... And the thousands of Undeliverable email error messages are also sent to me.

Is there a way to stop this from Happening? ....... Besides changing my email address?

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Can Not Send Email From My Server

Aug 25, 2007

I can not send email from my server ,it shows the below error :

"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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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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My Mail Server Will Not Receive Or Send Email

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 Our domain is 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.

When I go to dnsreport and input our mail server ( I get ERROR:

The parent servers say that the domain does not have any NS records (although they may have some other information on that zone).

When I put in our mail server under mail test I get this Getting MX record for (from local DNS server, may be cached)... There is no MX record for! 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.

I am not sure what most of this information means. I am in contact with our DNS provider and they keep on trying to sell me some solution. So does mxtoolbox.

I don't know what to do.

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My New Server Dose Not Send Email To Hotmail

Nov 25, 2007

iam always having problem with Email know i have order a new server i try to use some script like phpbb.vb.ipb and some other script that have options to send email when people register etc...

if i register use hotmail there is no email will come to me in my inbox why ?

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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Email Security From Spammers

Oct 3, 2006

I have two domains that I haven't set email up for yet. One is hosted on a good plan that uses cPanel. The other has some not-so-user-friendly interface.

Either case, I haven't set up email because I don't know what to seperate between truth and fiction. I know of the front end measures of cloaking an email link to your site using hex or some other hack so it doesn't show up to spiders and bots.

I also heard a rumor that using generic "webmaster@" on any domain is a surefire way for these bots to spam through. So is that true? Should I name my link like "thiswebmaster@" instead ? (or to that effect?)

What can I do to prevent too much (relatively speaking I guess) spam coming in?

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Exim Mail Server Failing To Send Email

Jun 16, 2009

Just started to have problems sending emails out but no problem receiving.

Seems to be a exim problem.. tried updating it but the problem still exist but everytime I restart exim then it works for a few hours before the problem comes back.

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How To Automatically Send Email When Someone Login Server Via ROOT

Jun 8, 2009

I want to have an email alert everytime someone login into my server using ROOT user.

The server is based on Linux system.

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Stop Spammers From Spoofing My Email Domain

May 4, 2007

Is there any way to stop spammers from spoofing my address? I've had issues ever since I started this server with getting bounced spam where the "From:" field was (jibberish) which was annoying but not that constant.

I came online this morning to check my mail and had over 1200 e-mails and all of them have "" as the "From:" address, but the message-ID has my domain name in it..


------ This is a copy of the message, including all the headers. ------

Return-path: <>
Received: from nobody by with local (Exim 4.63)
(envelope-from <>)
id 1Hju9b-0002y3-TH
for; Fri, 04 May 2007 05:32:43 -0400
Subject: Update Your Account Records
From: Wells Fargo Online <>
MIME-Version: 1.0
Content-Type: text/html
Content-Transfer-Encoding: 8bit

Message-Id: <>
Date: Fri, 04 May 2007 05:32:43 -0400

There's gotta be some way (make that 1204.. just got 4 more bounces) to block spammers from doing this. Could someone help a newbie out?

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Dec 16, 2007

Anybody got a good script to check the server load and to send email if it is pretty high? Perl or bash one?

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Plesk 12.x / Linux :: Not Able To Send Email To Another Email On Same VPS With External MX Record

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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One Account On Server Can't Receive Email's But Can Send "Out"

Aug 29, 2007

I own a dedicated server, and I have one person on the server that can send emails, but for some reason cannot receive them.

It's only this one account that's facing this issue, so I'm not sure if it's something on the server or their account?

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Acc Can Send Email Cannot Receive Email

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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Cannot Send Email

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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Send LOTS Of Email

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, , ...) accept emails coming from my server only hotmail doesn't reicive

when I run this command in SSH : echo "test mail" | mail -s "test"

I have in my exim_mainlog :

PHP Code:

7-09-12 13:44:11 1IVPhb-0008Cm-Rz <= U=root P=local S=3822007-11-24 13:44:12 1IVPhb-0008Cm-Rz => R=lookuphost T=remote_smtp []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 => R=lookuphost T=remote_smtp []2007-11-24 13:44:30 1IVPht-0008D9-UC Completed2 1IVPhb-0008Cm-Rz => R=lookuphost T=remote_smtp []2007-11-24 13:44:12 1IVPhb-0008Cm-Rz Completed 

telnet 25 give :

PHP Code:

[root@server ~]# telnet 25Trying to ( character is '^]'.220 Sending unsolicited commercial or bulk e-mail to Microsoft's computer network is prohibited. Other restrictions are found at 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 <= U=root P=local S=3612007-11-23 23:50:30 1IviI1-0001De-SX => R=lookuphost T=remote_smtp []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 (not

I wanna send email to from php

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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
GMAil header test. SPF pass
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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Best Way Send A Few Thousand Email Per Day- Not SPAM.

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

I have a dedicated server with godaddy and it has squirrel mail/sendmail/dovecot etc installed on it. I am able to log-in to squirrel mail but when I try to send email, it fails. Even it's not able to receive email. I restarted sendmail but it still does not works.

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

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Sep 8, 2007

I am unable to send or receive email from the server in Mail Queue Manager it shows this when clicking deliver now

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:
== 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.

However one thing does have me puzzled. As I understand it (and correct me if I am wrong) my new hosting company are now the authority for my zone and should have a zone file which points my domain name at one of their IP addresses? However my previous host has a webbased email panel - if I log in to it I can still send email (but not recieve). This has confused me as I would have thought that my new ISP would have a zone file with an MX record for my email? How is this possible?

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I want to keep a check on sites that are sending email from the site, to make sure they are not being exploited and result in our server getting blacklisted by big service providers. I'd love a tool that would automatically block messages from an account after a certain threshold is hit.

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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.

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Aug 9, 2007

I just opened my "catch-all" email pop account that sends me everything addressed to my server that doesn't have an assigned email address. I check it every few days.

Over 4,500 undeliverables. Someone is using mydomain as a phony return address in different forms (, etc.) If I got over 4,500 undeliverables, these lowlife creeps must have sent innumerable thousands or tens of thousands using my domain as a return address.

What really stinks is that I've had a bunch of users complain that they're not getting usual auto-messages from my forum software. Come to find out that my domain is now banned from at least one major ISP, I'm guessing probably more by now.

The website I run depends heavily on VOLUNTARY auto-communications and updates. For example, one mailing list I maintain have over 4,800 members who've signed up for updates. It uses other feeds and email functions as well.

Am I to understand that any jackass spammer can hose a server this way, with no redress on the part of the innocent party? Also, how am I going to get back in the good graces of the ISPs and personal anti-spam programs that have now blacklisted my server for no reason?

Besides contacting all of the larger ones personally, I wouldn't even know where to begin addressing this.

Is it possible that some nasty geek with a spam program can just ruin a server in this fashion?

Just checked the account again.

In the ten minutes it took me to write the above post, I just got 54 more undeliverables.

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