Is anyone else having a large number of Comcast email addresses being bounced back?
We found that it started two weeks ago and is spreading to other Comcast addresses that were previously working.
If you have received info on this or if it is happening to your network as well,
I'm an IT administrator for a school and due to high amounts of spam and a shrinking budget, I've built a mail server with Slackware 11 as the OS and running Sendmail 8.14.2.
The email was working great for about a week when suddenly emails from the sever were being bounced. When I look at the bounced emails I notice this.
The original message was received at Mon, 21 Jul 2008 16:59:54 -0600 from IDENT:2@localhost [127.0.0.1]
What I'm guessing is that when a server receives our emails they see the 2@localhost [127.0.0.1], thinks it's spam and bounces it back to us.
I believe that I need to tweak the sendmail.cf file but I'm not too sure what I need to tweak. Here are some of the things I've tried so far.
In the sendmail.cf file I added servername.domainname.com to Cw localhost
Used the Masquerade options with no luck.
In a different forum someone said to edit the /etc/hosts file from this:
127.0.0.1 localhost
10.0.0.12 servername.domainname.com
to this:
10.0.0.12 servername.domainname.com
127.0.0.1 localhost
Which didn't help. Since DNS is being handled by another server, it was suggested that I edit the /etc/nsswitch.conf file so that the dns option was removed from the hosts: line. That didn't work either.
Right now I'm fairly confident that it's something I have to change in the .cf file but as I said earlier I'm not too sure what.
I've recently gotten a new dedicated server and am in a bit of a bind because all emails to Comcast are blocked. I have verified that the IP is not on any RBL I can find but it does appear on the Trend Micro DUL list. This is a list that appears to not be maintained but which the wingnuts at Comcast are using. Emails to the maintainer of the list or to Comcast are auto-responded to and promptly ignored.
I'm at wits end (admittedly, not a long journey) with this. As a small provider I guess I just don't count but it is annoying as hell that there is no way to get these folks to listen. Every legitimate RBL on the planet has someone to help with issues but Trend Micro appears to not. And Comcast doesn't care about their customers getting legitimate email. Actually, I guess they just don't care period.
Has anyone else experienced this and, if so, were you able to figure out what magical incantation it takes to get through to a human who cares?
The issue is that a lot of my emails seem to be bouncing back at the moment with the subject 'Subject: Warning: could not send message for past 1 day'
Could anyone explain why this might be the case? I've had a look online and the only thing I can think it might be is that my email address has been gray listed. To solve this it was recommended to use a SPF Record.
I did not really want to start messing around with my DNS before I could get some confirmation that this is the case. Though if there is another explaination please can you let m know.
The emails that I have sent have all had pdf's attached to them.
active reverse DNS in web host manager as i keep getting emails bouncing back etc.
View 4 Replies View RelatedI have a dedicate server and got a problem with receiving and sending email with Yahoo email accounts. I checked with gmail and other one and it works fine except Yahoo. It does not delivery when I sent out to Yahoo accounts. However, I can get email from Yahoo when they send back to me but a little bit delay.
View 4 Replies View Relatedmany of my clients complaining that mostly of their emails not delivered. Email also not returning back.
Some also complaining that they not receiving many of emails.
i contact with support they reply no problem they seen in VPS.
I have Cpanel.
I have 2 different servers one with Plesk 11.5. and one new just installed Plesk 12.0, the 12.0 will not send emails out but i get them back to the inbox of the outgoing server. is there a fix for this as i have tried both postfix and qmail to send out emails all with the same result.
It seems that something has changed from version 11.5 to 12.
The plesk configuration is installed on Debian 7.7 OS
Sometimes my clients tell me that they cannot send email but they can receive, i didn't know what was going on untill i got this:
Can't send to ''. The server gives this reason: '550 Blocked - see [url].
Of course i know what this is, the IP my provider gives me at random every two days or so is blocked for sending spam even though i did not do it, well, i asked for removal of the ip from the abuseat.org site BUT!
The thing is, I CAN STILL send email from other pop3 accounts on the same machine to the same adress but using different servers that the one on my server with layeredtech, ie. my provider email address...
So i was wondering if the server email program (exim) on my server it's checking the blacklists as an option? so i could remove it?
thanks this is very important for my business since our provider does not give us a static IP.
Am using CentOS 4.4 i686 WHM 10.8.0 cPanel 10.9.0-S9966
Can you put two of these supermicro mini servers back to back in a standard rack? I am looking at the [url]
View 14 Replies View RelatedI am managing a newsletter list and would like to remove the email addresses of messages that have failed or bounced.
I have been sending my newsletter with inhouse software that bundles email in the bcc field. As a result each bounced email lists multiple bounced emails in the body of the returned email.
I have found software that can automatically go through an inbox and make a list of all the bounces however this only works when the bounced emails show up in the email field.
Is there any way that I can retrieve a list of bounced email addresses without manually opening each email and getting the address?
We're having a meeting today with Comcast about letting them move fiber into our facility. Please do not post experiences with Comcast CABLE. I want to know your experience as other datacenters and hosts with Comcast Fiber. What do you know about their fiber and what is your experience with them in both standalone and BGP?
Reliability, latency, peering quality, etc. We are in the Houston area, where so far I have heard they are pretty good with most I have talked to, and a few negatives. At what level would you use their connection?
I have Comcast Business PRO Internet service for work purposes. I've got two web/dns servers and two mail servers, each having their own IP. These are all fine.
There had been a couple situations in the past where I would receive a "Relaying Denied" message from my PINE when sending mail out. At examination of the maillog, It's essentially telling me that these messages are being generated because of the lack of reverse DNS.
xxx.xxx.xxx.xxx-Oregon.hfc.comcastbusiness.net., instead of my.domain.com.
I did a couple searches on Google, and read somewhere that Comcast is unwilling to create rDNS entries, but they've not specified, so far, whether they subscribe to PRO or residential service.
Before I spend 90 minutes on the phone with Comcast, I thought I'd see if anybody here has been successful with rDNS and Comcast PRO before. It seems to me that by denying this, it defeats the purpose of the "dedicated" service that I signed up with ...
Are there any co-location companies in California (preferably northern) that have a peering agreement directly with Comcast?
Not sure if it's peering or transit I should be asking about. Basically I'm trying to get the best path I can afford to Comcast customers in California.
it looks like FDC is taking more pain than usual in terms of network upgrade, i see the network seems unstable till 5am and even now the sessions are getting lost, once in a while like once a hr, anyway this is not the reason i am writing this, but when did comcast become transit provider, i did a trace to UK for example and i see trace going through comcast and then hopping onto tiscali/level3, it looks to me like, comcast could be trying to even out (1:1) it;s carriers so that they get all inbound for free sort of and it;s upstream selling as a transit make money there. sort of, just a surprise to me at this point
2 <1 ms <1 ms <1 ms 66.90.127.141 [66.90.127.141]
3 1 ms 1 ms 1 ms be-10-604-cr01.chicago.il.ibone.comcast.net [68.
6.89.49]
4 37 ms 40 ms 36 ms pos-1-14-0-0-cr01.newyork.ny.ibone.comcast.net [
8.86.85.105]
5 42 ms 42 ms 42 ms pos-1-15-0-0-cr01.mclean.va.ibone.comcast.net [6
.86.85.89]
6 30 ms 30 ms 31 ms xe-3-1-0.was11.ip.tiscali.net [213.200.84.117]
7 122 ms 115 ms 113 ms xe-2-1-0.par70.ip.tiscali.net [89.149.186.165]
8 119 ms 119 ms 119 ms kpn-eurorings-gw.ip.tiscali.net [213.200.85.238]
9 120 ms 120 ms 123 ms asd2-rou-1021.NL.eurorings.net [134.222.231.177]
10 119 ms 119 ms 167 ms obl-rou-1021.NL.eurorings.net [134.222.231.130]
I have a business class comcast account and have been able to host multiple sites on my server but ive recently read strange things about comcast's regulations towards this.
there really arent any alternatives in my area for a connection and i have multiple accounts right now. has anyone had any bad experiences in this situation?
San Francisco to Ashburn
3 * 137 ms 111 ms ge-2-20-ur01.santaclara.ca.sfba.comcast.net [68.
86.143.145]
4 * 39 ms 89 ms pos-0-7-0-0-ar01.sfsutro.ca.sfba.comcast.net [68
.86.90.154]
5 * 289 ms 17 ms pos-0-9-0-0-cr01.sanjose.ca.ibone.comcast.net [6
8.86.85.130]
6 645 ms 95 ms 76 ms pos-0-9-0-0-cr01.denver.co.ibone.comcast.net [68
.86.85.118]
7 843 ms 111 ms 262 ms pos-0-10-0-0-cr01.chicago.il.ibone.comcast.net [
68.86.85.54]
8 124 ms 100 ms 114 ms pos-0-3-0-0-cr01.cleveland.oh.ibone.comcast.net
9 167 ms 125 ms 225 ms
pos-0-6-0-0-cr01.pittsburgh.pa.ibone.comcast.net
[68.86.85.42]
10 156 ms 108 ms 164 ms te-0-4-0-7-cr01.mclean.va.ibone.comcast.net [68.
86.84.93]
11 113 ms 192 ms 107 ms te-1-1-pr01.ashburn.va.ibone.comcast.net [68.86.
84.94]
12 188 ms 233 ms 112 ms xe-3-1-0.was11.ip.tiscali.net [213.200.84.117]
San Francisco to Santa Clara
6 87 ms 60 ms 75 ms sar1.sffca.ip.att.net [12.123.12.121]
7 57 ms 61 ms 52 ms te-0-3-0-0-ar01.sfsutro.ca.sfba.comcast.net [68.
87.226.185]
8 67 ms 79 ms * ge-2-20-ur01.santaclara.ca.sfba.comcast.net [68.
86.143.145]
9 176 ms 142 ms 129 ms ge-2-20-ur01.santaclara.ca.sfba.comcast.net [68.
86.143.145]
For some reason... No one with a Comcast.net email address can email us..
Always the Rejected Email comes back with This message:
==============================================================
A message (from <yyyyyyy@comcast.net>) was received at 29 Mar 2007 3:15:15 +0000.
The following addresses had delivery problems:
<yyyyy@sellwebhost.com>
Permanent Failure: 550-Callback_setup_failed_while_verifying_<yyyyyyy@comcast.net>
Delivery last attempted at Thu, 29 Mar 2007 03:15:18 -0000
=============================================================
I have used "yyyyyyy" only to alter the email address for privacy..
Both have a nationwide backbone, ibone for Comcast and tbone for Road Runner. Which one is bigger and does anyone have a network map?
View 5 Replies View RelatedI find it very interesting that the major ISPs in and around Portland Oregon apparently do not peer with anyone in the region. For low latency you're better off choosing a provider in Seattle or San Jose as traffic always seems to be routed there and back anyways.
Why is this? Is it simply not worth their effort to setup the peering connections because most traffic will be hosted outside the region anyways?
I just read this on their forums.Softlayer is pleased to announce that we have turned up a private 10G peer with Comcast in Dallas. This will bring our total capacity in Dallas to 70Gs.
Dallas, TX (dal01) - 70Gs
Verio - 20G (2x 10G)
Level3 - 10G
Savvis - 10G
Global Crossing - 10G
Internap - 10G
Comcast - 10G private peering Which other providers have this?
It appears Comcast is now blocking port 25. As a result, I can't sent outbound email via my dedicated server. They had me change to port 587 for my comast email account, but that doesn't solve my not being able to send outbound from my dedicated server.
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?
Many of the VPS providers I've looked at don't back up the servers that house the VPSs and as such don't back up the VPSs either - have you considered what would happen should the VPS itself be erased (such as what happened to vaserv/fsckvps not too long ago)?
View 14 Replies View RelatedI setup mail piping with Exim so that e-mails sent to a specific account be forwarded to my PHP script. It's not working properly, because when I send a mail to this account, it's bounced by the mailer daemon:
Code:
This message was created automatically by mail delivery software.
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:
pipe to |/home/user/public_html/support/parse.php
generated by support@mydomain.com
local delivery failed
In my /etc/valiases/domain.com file I have:
Code:
support@mydomain.com: "|/home/user/public_html/support/parse.php"
*: :blackhole:
What can be causing the error?
Since Jan 07, one of our servers has been sending thousands of emails to ne.jp hosts.
Eg from logs:
Code:
Sep 4 19:11:11 debian sm-mta[25383]: l84FY9ME016602: to=, ctladdr= (2001/2001), delay=01:37:02, xdelay=00:00:00, mailer=esmtp, pri=930403, relay=lsean.ezweb.ne.jp., dsn=4.0.0, stat=Deferred: Connection timed out with lsean.ezweb.ne.jp.
Sep 4 19:11:11 debian sm-mta[25383]: l84FYB7d016734: to=, ctladdr= (2001/2001), delay=01:37:00, xdelay=00:00:00, mailer=esmtp, pri=930403, relay=lsean.ezweb.ne.jp., dsn=4.0.0, stat=Deferred: Connection timed out with lsean.ezweb.ne.jp.
Sep 4 19:11:11 debian sm-mta[25383]: l84FY9A4016629: to=, ctladdr= (2001/2001), delay=01:37:02, xdelay=00:00:00, mailer=esmtp, pri=930403, relay=lsean.ezweb.ne.jp., dsn=4.0.0, stat=Deferred: Connection timed out with lsean.ezweb.ne.jp.
Sep 4 19:11:11 debian sm-mta[25383]: l84FY9la016616: to=, ctladdr= (2001/2001), delay=01:37:02, xdelay=00:00:00, mailer=esmtp, pri=930403, relay=lsean.ezweb.ne.jp., dsn=4.0.0, stat=Deferred: Connection timed out with lsean.ezweb.ne.jp.
Sep 4 19:11:11 debian sm-mta[25383]: l84FYCkO016807: to=, ctladdr= (2001/2001), delay=01:36:58, xdelay=00:00:00, mailer=esmtp, pri=930403, relay=lsean.ezweb.ne.jp., dsn=4.0.0, stat=Deferred: Connection timed out with lsean.ezweb.ne.jp.
Sep 4 19:11:11 debian sm-mta[25383]: l84FYB7B016730: to=, ctladdr= (2001/2001), delay=01:37:00, xdelay=00:00:00, mailer=esmtp, pri=930403, relay=lsean.ezweb.ne.jp., dsn=4.0.0, stat=Deferred: Connection timed out with lsean.ezweb.ne.jp.
Sep 4 19:11:11 debian sm-mta[25383]: l84FYCO0016757: to=, ctladdr= (2001/2001), delay=01:36:59, xdelay=00:00:00, mailer=esmtp, pri=930403, relay=lsean.ezweb.ne.jp., dsn=4.0.0, stat=Deferred: Connection timed out with lsean.ezweb.ne.jp.
Sep 4 19:11:11 debian sm-mta[25383]: l84FYDjq016819: to=, ctladdr= (2001/2001), delay=01:36:58, xdelay=00:00:00, mailer=esmtp, pri=930403, relay=lsean.ezweb.ne.jp., dsn=4.0.0, stat=Deferred: Connection timed out with lsean.ezweb.ne.jp.
Sep 4 19:11:11 debian sm-mta[25383]: l84FYBhL016751: to=, ctladdr= (2001/2001), delay=01:37:00, xdelay=00:00:00, mailer=esmtp, pri=930403, relay=lsean.ezweb.ne.jp., dsn=4.0.0, stat=Deferred: Connection timed out with lsean.ezweb.ne.jp.
Sep 4 19:11:11 debian sm-mta[25383]: l84FYDPw016811: to=, ctladdr= (2001/2001), delay=01:36:58, xdelay=00:00:00, mailer=esmtp, pri=930403, relay=lsean.ezweb.ne.jp., dsn=4.0.0, stat=Deferred: Connection timed out with lsean.ezweb.ne.jp.
We're absolutely unable to track or find out who is sending it or how to stop this.
So I'm wondering if it is possible to prevent sendmail from sending to:
lsean.ezweb.ne.jp, OR
docomo.ne.jp, OR
softbank.ne.jp
/var/mail/vhostswww logs are not showing helpful info at all. Eg:
Code:
--l84GRnX5029819.1188924137/debian--
Content-Transfer-Encoding: 7bit
Content-Type: text/plain; charset=ISO-2022-JP
Mime-Version: 1.0
From: hanako.@docomo.ne.jp
Subject:
To: a_j.n-y_bluespider-tattoo@softbank.ne.jp
Message-Id: <200709041410.l84EA0Fh007971@debian>
Date: Tue, 4 Sep 2007 16:10:00 +0200
Tue, 4 Sep 2007 16:10:00 +0200
by debian (8.13.4/8.13.4/Submit) id l84EA0Fh007971;
Received: (from vhostswww@localhost)
for ; Tue, 4 Sep 2007 16:10:00 +0200
by debian (8.13.4/8.13.4/Debian-3sarge3) with ESMTP id l84EA0jk007973
Received: from debian (localhost [127.0.0.1])
Return-Path:
Content-Type: text/rfc822-headers
--l84GRnX5029819.1188924137/debian
Last-Attempt-Date: Tue, 4 Sep 2007 18:42:16 +0200
Diagnostic-Code: SMTP; 550 Invalid recipient:
Remote-MTA: DNS; mx.softbank.ne.jp
Status: 5.1.1
Action: failed
Final-Recipient: RFC822; a_j.n-y_bluespider-tattoo@softbank.ne.jp
Arrival-Date: Tue, 4 Sep 2007 16:10:00 +0200
Reporting-MTA: dns; debian
Content-Type: message/delivery-status
--l84GRnX5029819.1188924137/debian
<<< 503 No recipients specified
550 5.1.1 ... User unknown
<<< 550 Invalid recipient:
>>> DATA
... while talking to mx.softbank.ne.jp.:
----- Transcript of session follows -----
(reason: 550 Invalid recipient: )
----- The following addresses had permanent fatal errors -----
from localhost [127.0.0.1]
The original message was received at Tue, 4 Sep 2007 16:10:00 +0200
--l84GRnX5029819.1188924137/debian
This is a MIME-encapsulated message
Auto-Submitted: auto-generated (failure)
Subject: Returned mail: see transcript for details
boundary="l84GRnX5029819.1188924137/debian"
Content-Type: multipart/report; report-type=delivery-status;
MIME-Version: 1.0
To:
Message-Id: <200709041642.l84GRnX5029819@debian>
From: Mail Delivery Subsystem
Date: Tue, 4 Sep 2007 18:42:17 +0200
Tue, 4 Sep 2007 18:42:17 +0200
by debian (8.13.4/8.13.4/Debian-3sarge3) id l84GRnX5029819;
Received: from localhost (localhost)
Return-Path:
From MAILER-DAEMON Tue Sep 4 18:42:17 2007
--l84GRnX4029819.1188924135/debian--
Content-Transfer-Encoding: 7bit
Content-Type: text/plain; charset=ISO-2022-JP
Mime-Version: 1.0
From: hanako.@docomo.ne.jp
Subject:
To: a_j.n-y_bluespider-tattoo@softbank.ne.jp
Message-Id: <200709041411.l84EB8CS011861@debian>
Date: Tue, 4 Sep 2007 16:11:08 +0200
Tue, 4 Sep 2007 16:11:08 +0200
by debian (8.13.4/8.13.4/Submit) id l84EB8CS011861;
Received: (from vhostswww@localhost)
for ; Tue, 4 Sep 2007 16:11:09 +0200
by debian (8.13.4/8.13.4/Debian-3sarge3) with ESMTP id l84EB8f6011862
Received: from debian (localhost [127.0.0.1])
Return-Path:
Content-Type: text/rfc822-headers
--l84GRnX4029819.1188924135/debian
Last-Attempt-Date: Tue, 4 Sep 2007 18:42:15 +0200
Diagnostic-Code: SMTP; 550 Invalid recipient:
Remote-MTA: DNS; mx.softbank.ne.jp
Status: 5.1.1
Action: failed
Final-Recipient: RFC822; a_j.n-y_bluespider-tattoo@softbank.ne.jp
Arrival-Date: Tue, 4 Sep 2007 16:11:09 +0200
Reporting-MTA: dns; debian
Content-Type: message/delivery-status
--l84GRnX4029819.1188924135/debian
<<< 503 No recipients specified
550 5.1.1 ... User unknown
<<< 550 Invalid recipient:
>>> DATA
... while talking to mx.softbank.ne.jp.:
----- Transcript of session follows -----
(reason: 550 Invalid recipient: )
----- The following addresses had permanent fatal errors -----
from localhost [127.0.0.1]
The original message was received at Tue, 4 Sep 2007 16:11:09 +0200
--l84GRnX4029819.1188924135/debian
This is a MIME-encapsulated message
Auto-Submitted: auto-generated (failure)
Subject: Returned mail: see transcript for details
boundary="l84GRnX4029819.1188924135/debian"
Content-Type: multipart/report; report-type=delivery-status;
MIME-Version: 1.0
To:
Message-Id: <200709041642.l84GRnX4029819@debian>
From: Mail Delivery Subsystem
Date: Tue, 4 Sep 2007 18:42:15 +0200
Tue, 4 Sep 2007 18:42:15 +0200
by debian (8.13.4/8.13.4/Debian-3sarge3) id l84GRnX4029819;
Received: from localhost (localhost)
Return-Path:
From MAILER-DAEMON Tue Sep 4 18:42:15 2007
--l84GRnX3029819.1188924134/debian--
How would I solve this problem as it's making our server load skyhigh 24/7.
Additional info about system:
> Debian Linux, latest kernel
> Sendmail (we've tried postfix, exim, with same results)
> Non cPanel system.
I have 3 websites on dedicated server(linux - plesk)
my data are about 2gigs. I want to know what is best way of backing up?
I have setup a xen vps. I have installed a package called Ossim. The xen VPS is based on the OS -- Centos 5. There are no web hosting panels etc installed like cpanel or plesk. Iam going to proceed with a few more software installations on it like elastix.
However before proceeding further, i want to backup the entire vps ie the entire data in it.
I've always thought, and it is like that, that the back ups are part of any quality VPS Hosting service. But see this below. It is part of the TOS, listed by quite popular vps hosting provider.
"Your use of - - - servers and services is at your sole risk. - - - is not responsible for files and/or data residing on your VPS. While complimentary backups may be provided by - - -, you agree to take full responsibility for files and data transferred to/from and maintained on your VPS and agree that it is your own responsiblity to take backups of data residing on your VPS."