Trace If An Email Address Has Been Blocked By A Host?
Jan 31, 2005
Just wondering if there was a way to trace if an email has been blocked by a webhosts server.
My customer gets an automated email when he books online for Qantas Australia (Australia's biggest Airline Company). I have moved them from an Australian based web host to a US based server and host.
Since the host move, these emails no longer go through to the clients email address on the new hosts server.
I got Qantas to send the email through to me which is on a US server also but a different host to that of my client?? But they did not come through to me even.
I got Qantas to send it through to my personal email address (an Australian bigname ISP) which went through fine and I received it.
The auto generated email possibly could be coming through a 3rd party server so I was thinking maybe this server IP has been blocked for whatever reason (if 3rd party it could have been anyone) It is just strange that used to get them OK through the Australian server and still through my persoanl Australian ISP.
So is there a way to check and confirm and secondly if my suspicions are right would there be a process of trying to get the hosts to accept an email from Qantas as this customer doesnt want to have another email account.
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May 12, 2008
I have pure-ftp server.
I have checked some ftp failure login attempt made but when i check log file but only see real ip address which is external ip address but i want to trace main ip so anyone tell me howto trace that ip address.
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Apr 9, 2008
I have blocked an IP both in host.deny AND in iptables...and the guy is still able to access my server...any suggestions or something to look for.
CentOS 4.5
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Sep 11, 2006
for about only 3 months running, my server iptables has 36 ipaddresses blocked so far (most of them are from .edu.cn and .edu.tw, dunno why? maybe because of summer break hehe..).
Those IP got blocked mostly because of SSH bruteforce. Everytime I noticed any SSH bruteforce on my /var/log/secure, I just issued "iptables -A INPUT -p all -s [ipaddress] -j DROP"
so, I'm just curious, how about yours ? how many IP in your blocked lists?
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Mar 26, 2007
One of my VPS clients has had all of the ip addresses on his server blocked/blacklisted on the hotmail service, he cannot send email to or recieve email from anyone with a hotmail email address, does anyone have any ideas on a solution, other than changing all the ip's on his vps?
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Mar 15, 2008
I cannot send emails to name@hotmail.com from any of sites hosted on my server. No mass emails. no unusual activities. Even though they blocked it. I filled out their forms but they didn't remove the block.
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Jul 29, 2008
how to find how many ip blocked in ip table?also tell me how clear the ip table and find what are ips blocked in ip table
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Jul 23, 2014
There is a strange problem with the new feature fail2ban. I have noticed that a local ip address (ip address from the webserver itself) was added to the blocked ip addresses of fail2ban now for the second time. What I can see is that it was the recidive jail.
If there is nginx used as reverse proxy you get a "502 Bad Gateway". Any way to find out more about the reason why an ip address is added to the list of blocked ip addresses in fail2ban?
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Feb 6, 2015
My customer has an external facing Apache server that is acting as a reverse proxy to two internal applications. They have:
- external addresses for each app which resolve to different ip addresses, so app1.their_domain.com and app2.their_domain.com resolve to 77.3.170.10 and 77.3.170.11 respectively.
- the Apache server has two network interfaces with ip addresses 192.168.10.10 and 192.168.10.11
- the external ip addresses resolve to the above internal addresses
- the firewall between the Apache server and the internal app servers is configured to allow traffic from 192.168.10.10 to reach app_server1, and traffic from 192.168.10.11 to reach app_server2, both using port 7777.
I have configured a virtual host in httpd.conf for each ip, i.e.
Code:
<VirtualHost 192.168.10.10:80>
...
ProxyPass /app http://app_server1:7777/app
ProxyPassReverse /app http://app_server1:7777/app
RewriteRule ^/$ /app/app1 [R,L]
...
<VirtualHost>
and
Code:
<VirtualHost 192.168.10.11:80>
...
ProxyPass /app http://app_server2:7777/app
ProxyPassReverse /app http://app_server2:7777/app
RewriteRule ^/$ /app/app2 [R,L]
...
<VirtualHost>
This works fine in that the external address are being routed to the correct application, however the firewall is blocking requests to the second app as it appears the requests are coming from the Apache servers 'primary' ip address 192.168.10.10 instead of 192.168.10.11.
Is it possible to send requests using the ip address from the relevant VirtualHost?
Windows server 2008
Apache 2.2
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Feb 22, 2007
I have a leased server that I use cpanel and webhost manager to manage. I've just set up the server in the past week and put our website on it and created all the email accounts. The emails are all working fine now, but we have another website on someone elses server that has sends an email (using php) and the emails aren't going through.
They went through just fine before I moved our site and email accounts over, and I've checked in cpanel to see if I had any spam filters turned on and I don't. I've also tried sending email manually using thunderbird and outlook, both work fine. Also, on our server, i've been able to send email through php.
Anyone know of a setting that I might be missing in my webhost manager?
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Feb 13, 2009
After experiencing some issues with my long-time webhost, I decided to sign up with a new host. I did lots of reasearch, read reviews here and elsewhere, asked the hosts presales questions, etc. and finally settled on a particular host.
After signing up, I never received information about my account. I used the online chat, and the owner said that due to spam sent from their server the day before, it had been blocked by Verizon (my ISP) for a few days. So, I could not receive email from them at my Verizon acct. (which I use, instead of one associated with my website, for everything hosting-related).
Then, I found that I couldn't even access their website anymore. It, too, had been blocked by Verizon.
This made me very nervous so I asked for a refund and received it immediately. The owner of the hosting co. was very apologetic.
So, I went to my second-choice host. Once again, the welcome email didn't arrive. So, I asked them - through a support ticket - when it would come. They said it had been sent. I then found they'd sent me a number of emails, none of which had arrived. Very strange, I've never had a problem receiving mail sent to this email address before.
I asked if perhaps their mail server was blocked by Verizon too (told them what happened earlier in the day). They said no way, then came back and said yes, it was. Again, I asked for a refund. But, it's been 15 hours and I haven't had a reply to that.
I am now looking for yet another host - and would sure like to find one that's clear of this issue.
I've been developing websites since 1999 and have worked with a number of hosts, but this is the first time I've found this problem - and twice in the same day!
After all that, my question is:
Is there some way for me to tell in advance whether a particular server is blocked by my ISP?
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Apr 11, 2008
I used Hostgator but my website was blocked in China.
So do anyone know of any US web host that is NOT blocked in China ? For example, Dreamhost or any web host for that matter?
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Jul 23, 2008
I moved an account over to my VPS and I made a paypal payment and exim blocked it with this error:
rejected after DATA: This message contains a virus or other harmful content (Phishing.Heuristics.Email.SpoofedDomain
Help how do I fix it ?
I checked the IP it was sent from and it belongs to Ebay which is paypal I believe
Running cPanel/WHM
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Jul 18, 2009
I had a email address I deleted on my server (postfix on Debian 4), but to my surprise the server still recieves email for the address!
(I have manually tried sending a email to the address and it comes througt).
I have deleted the address from the /etc/postfix/virtual file and restarted postfix.
What could I have forgotten?
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Apr 11, 2008
I'm configuring a website for a client who has moved their web hosting to downtownhost, but is keeping their email hosting with their current provider. They do not want to configure an MX entry on DTH to autoforward email back to their current provider because they don't want their email to pass through DTH.
In order to do this, do I keep the nameserver entries on the current provider the same, and configure an http redirect to point to DTH? Or is there something else I should configure on the current provider?
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May 13, 2008
I just wanted to know that could we track or are able to know the actual email address of the user that hits on our website or is this possible from the provider / host to know?
I just looked into some of the services like -
Trace Email
Domain Look up
Trace IP
But somehow it does not full fill my above query. Or it is not at all possible to track email addresses directly ?
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Apr 30, 2008
I am migrating a client from Plesk to my cPanel server and I want the client to be able to access webmail on their old server through their IP address during the migration.
On my cPanel server, webmail can be reached at [url]or [url]
The problem is that none of the above urls is working on the Plesk server. The webmail for the domain is currently at [url]. Could anyone tell how can I reach webmail on Plesk through their current IP address?
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Apr 16, 2008
I recently stumpled upon this really good domain name which is squatted. I did a who.is look up on the domain so that I may contact the owner but all I get is this encrypted email address:
e-mail: 804c93ec0559b7bea8c91fcbf390296-bh867@contact.gandi.net
Does this mean that the domain owner has chosen to hide his email so that he wont be contacted?
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Jan 24, 2007
what do i type into Command Prompt to see where a email address comes from. eg myname@domain.com resolves to host.mydomain.com
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Jun 24, 2008
I currently have a domain on Server 1 (Linux, Apache, Ubuntu, Matrix control panel).
This server does not have any spam filter, so I have moved all the email accounts to Server 2 (Linux, Apache, Fedora Core, Plesk) which does have a brilliant spam filter; and have changed the DNS record for mail.domain.com to the IP address for Server 2.
Emails are being successfully received on Server 2.
On Server 1, when an email is sent through SMTP to an address at that domain, it does not send it to Server 2, it gets delivered to the hosting account for the domain on Server 1. So what I am guessing is happening is that Server 1 detects the domain has an account on the server, and instead of looking up the DNS info for that domain, just assumes it is on Server 1.
What I need to do, is force Server 1 to send email for that domain to Server 2. Is this possible, and if so, how can it be achieved? If more info about the server is required for a solution please let me know and I'll provide what I can.
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Aug 13, 2008
I currently host my own website with windows server 2003, it is a long ip address. I use a DNS redirector service to make it a real domain name. I was wondering if I can host more than one website?
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Apr 8, 2009
lets say i am running the mail() script at www.testdomain.com - if i set anyemail@testdomain.com as the to or from email address, it will take 20-60 seconds to complete. If I use ANY other email gmail, yahoo, fake, whatever on either, the script executes instantaneously. What could be the problem? I am a newbie at all this and would appreciate any guidance I can get here as far as diagnosing, etc.
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Nov 24, 2008
One of my clients is receiving spam from his email address. SpamAssassin is not marking it as spam. I have added an SPF record for the domain, but still gets these messages. Is there any workaround for this? I don't want to activate spambox for that.
Server is cPanel + CentOS 5.2
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Mar 9, 2007
This is twice I have found email addresses on the web that I have never created. Both domain names are the new extensions and I purchased them the first day they become public. .biz the other is .US
One of the domains I never even created a web page until yesterday. And today I find a German site using my domain as an email address. One note on this, this domain name is extremely unique and related to certain German ideas or thoughts.
I am thinking someone at the server created them and used them for their personal use. Is this possible?
Not only that, but I have sent email to these addresses and there was no bounce back. No bounce back meaning these are valid email addresses?
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Aug 9, 2008
is there a host that lets me add on as many unique ip as i want for extra cost?
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Jun 11, 2008
I have configured qmail+spamassassin. It working find but still I have 2 problem. I am receiving spam mails from my own account to my own account e.g. from=info@domain.com to info@domain.com. How can I block this spam?
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