How To Tell If A Host's Mail Is Blocked By My ISP
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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Oct 27, 2008
Yes, more ssh problems. I fixed it the last time. My IP was being block in "/etc/hosts.deny". So I removed my IP and BAM worked! I could login to SSH. Now today I get locked out AGAIN. I go in a look in "/etc/hosts.deny" my IP is not in there. So now I'm so confused and can't figure out whats going on....
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Jun 29, 2008
I was recently required by my datacenter to change the IP addresses of my servers.
Since then, I have been unable to send mail from my servers to optonline.net addresses.
Optonline is owned by Cablevision, based in NY.
I tried contacting them repeatedly via e-mail (from a Yahoo account, since I'm blocked) and they do not respond. I've tried calling them, however their regular tech support will not talk to me since I'm not a customer, and I've been unable to to reach their IT department through any of their other phone numbers.
I contacted a mutual customer and had them call, and conference me in. They had me e-mail them some header info, and said they would research it. The next day they called my customer and told them that I was blacklisted for sending spam, and I had to fix it before they would accept my mail. They also said they were not allowed to discuss this with me directly.
I've checked all the blacklists published on their support site, and I'm not on any of them. They apparently are using another blacklist that they will not disclose that my my IP is on (which I've NEVER been able to send to them from since I was assigned it). I've checked against all the blacklists I can find, and I'm not on any of them.
Has anyone ever been successful in getting off their blacklists, and if so, how?
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Jan 10, 2015
Is it possible to see what e-mails are blocked/prohibited by Plesk Outgoing mail control? Currently i've set a limit of 20 mails on each mailbox. Yesterday I received an e-mail that there were messages blocked. For me personally it would be good to see what the receivers email adresses are and optionally what the content of the e-mail was. This way I can find out if it was really spam or not.
If the e-mails weren't spam, is there a possibility to release and send them?
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Mar 17, 2009
I offer web hosting services to a few customers, but I'm not satisfied with the way I provide them with their mailboxes.
I'm looking for an e-mail service provider that I can use as a backend, and resell their services to my customer as my own service. So I'm trying to find a way to host my mail (POP, SMTP) servers elsewhere. You could look at it as me being a reseller of their e-mail services.
My need is that I'd want to be able to add mailboxes for my clients myself, or make them interface with the e-mail service through my implementation of the e-mail services provider API.
I came across mailtrust.com, but they require 150$ per month expenditure minimum to become a reseller. I only have 20 customers, and I'm not planning to grow much bigger.
It's really just a simple service for customers I personally know.
If anybody thinks I should instead pay a sysadmin to setup a mail server + spamassassin for me, and still host in on my own machine, please let me know.
Any guidance, links to e-mail services resellers,
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Feb 5, 2008
I'm in the process of moving some websites between hosts... from Dreamhost to a VPS.
Basically I want to make sure that no emails get lost in the transfer, as it's possible some people haven't collected their emails. I'm only talking about 5 or 6 sites here with about 15 mailboxes in total.
I have pop3 set up on the VPS with exim4 and courier using Maildir's. I have imap/pop3 access to emails on dreamhost and all my clients only use pop3.
Dreamhost doesn't provide direct access to the Maildir's of users, so I was planning on using offlineimap to save a copy of each mailbox and move it into the Maildir of the user on the VPS. I.e. move the contents of INBOX/new into user/Maildir/new etc. I'll do this once the dns settings have propogated so I can be sure to have every single email.
Does this sound reasonable? Is anything likely to break? Will any email clients break with any of these transferred emails? I tried it with a test account and it seemed OK, but I would like an experts opinion on whether or not this is the best way of achieving what I'm trying to do
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Mar 4, 2009
I am switching hosts, and I have tens of thousands of emails on my old mail server that I need transferred to my new one. How can I do that?
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Apr 2, 2008
I was in the market for a new dedicated server after a couple of years with my previous provider. The previous provider did nothing wrong but they were no longer competitive when it came to CPU and memory.
I moved first to geekrack. And I left them after a week and a half as they never were able to get my rDNS records setup.
I found Universal Hosts on this forum and gave them a shot. I had asked for an operating system that they didn't offer normally (Debian 64 bit) and they said that they could do it. However, when my server was setup it was 32 bit Debian instead. They apologized and had Debian 64 bit setup less than 24 hours later.
When I asked them to get rDNS records setup it took a few hours but they were setup correctly and they worked.
Universal Hosts is also a BurstNet reseller but compared to my other attempt at using a BurstNet reseller they are fantastic. While the initial config was incorrect they worked quickly to fix it and were very professional about it.
So after two weeks - so far so good. Keep up the good work UniHosts!
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Aug 11, 2013
I am running Apache2.2, PHP5.I have been running with virtual hosts on a Windows 7 environment fine for a couple of years successfully, but have just had to move to a Windows 8 environment.It looks like Apache and PHP have installed and are working fine, but my Virtual hosts are now not being recognised. From what I can tell, it is the Windows 8 hosts file that is having a problem, as it looks as though it is now just setup to Block websites.
If I make the host file just have the one line127.0.0.1 localhost entry, then the very first Virtual Host from my apache config file will come up, but the rest are not found.If I put the usual 127.0.0.1 mywebsite.name aliasname is appears as though my website works momentarily and then is blocked..
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Aug 16, 2008
Recently I stumbled along a host on here with a good rep and that uses direct admin.
Because they were very nice on the live support I signed up to see what direct admin was like.
Its very diferent from cpanel. Some parts seem to be harder to use like the phpmyadmin requires the username and password to the database you created not the control panel username and password like cpanel. Although I guess that could be a good security feature just in case some one gets into the control panel they can not get into the phpmyadmin, then again if they are smart and were able to get into the control panel they could get into ftp and look what the username and password is on the config file for the script you are using.
The bandwidth meter seems to be better in direct admin although I think its acting up for me as its putting yesterdays bandwidth on todays. I was told by the host that it updates every 2 hours and at first it did but now its gone to every day. Oh and unlike cpanel this bandwidth meter includes bandwith used by the control panel.
Niether one from what I can tell counts sftp though at least for the hosts I have right now.
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May 14, 2009
i have vbulletin forum with 250,000 member
i tried to send a message to them so i used this blugin
[url]
and send 200 message every 10 minute
after 4 days my ip address are blocked from yahoo server
every mail i want to send i get this message
[TS03] All messages from xx.xx.xx.xx will be permanently deferred; Retrying will NOT succeed. See [url]
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Jan 20, 2008
All of a sudden my sites are not visible to me hosted in the same cirtex hosting account. I have verified that it wasn't spyware messing with my local computer and can view the site via a proxy. They use cpanel and there is no block visible, but there has to be something somehwere. I told them to restart and that did make the site visible until I checked in the morning, Where would a block be if this is it and is there a chance this was done by a hacker?
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Dec 30, 2007
how willing your ISP/carrier is to block one or multiple IP addresses that have may have been causing issues for you such as DDoS attacks, hackings etc.
What has been your experience? Please provide as much detail on your experience as possible.
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Jul 19, 2007
I am blocked by MSN. All email messages directed to any @hotmail.com address is rejected, here a typical message:
A message that you sent could not be delivered to one or more of its recipients. This is a permanent error. The following address(es) failed:
name@hotmail.com
SMTP error from remote mail server after MAIL FROM:<user@mydomain.com> SIZE=1802:
host mx3.hotmail.com [65.54.244.200]: 550 Your e-mail was rejected for policy reasons on this gateway. Reasons for rejection may be related to content such as obscene language, graphics, or spam-like characteristics (or) other reputation problems.
I have never spammed nor sent similar content as that listed above.
My host provider says they are contacting MSN for an explantion, but time is running and I need to find a solution to this, because I have some customers (hosted in my server) which need to answer to @hotmailers prospects on their product/services.
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Jun 28, 2009
I need to block a specific IP:
93.6.224.242
It adds fine when I do:
iptables -A INPUT -s 93.6.224.242 -j DROP
However, the IP is still accessing files and pages on the site according to Apache:
When I ban other IP's they are blocked from accessing anything on the server (e.g. it wouldn't even reach Apache level because of firewall), but this IP just isn't banning properly.
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Nov 5, 2009
am using APF firewall and am getting ddos from these range ips
4.68.25.*
8.0.4.*
8.0.5.*
how could i delete all the range from these ip's?
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Oct 13, 2009
I have recently switched to GreenGeeks, great company and great support, but I am having a huge problem that all my clients and I are having problems with. No one can send emails to ATT, Verizon, Earthlink, Comcast, Etc. because they bounce back as being blocked. I have contacted them to unblock the IP and they do, but then a few days pass and it's blocked again. WTH? I've contacted GreenGeeks and they are aware of the problem but I really need to move on with this problem, does anyone know of any solution to do?
Example: ....
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Jul 8, 2009
We just got a new windows server and didnt put an antivirus or configure windows firewall, while setting up for the 1st two months.
our IP address has been blocked twice now by this company, on saturday, released on monday and blocked again on tuesday.
[url]
we applied to have it removed which they did and blocked it again, they claim we were spamming, which we never did
We have installed mcafee and setup windows firewall.
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Feb 3, 2009
One of my clients ran an e-mail bomber and gmail is blocking all emails from my server. I've searched but can't find a way to reach google or unblock the IP.
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