RDNS Getting Emails Back
Mar 19, 2008active reverse DNS in web host manager as i keep getting emails bouncing back etc.
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Emails Seem To Be Bouncing Back
Feb 25, 2009The 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.
Yahoo Sending My Emails Back
Mar 30, 2008I 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 RelatedEmails Not Delivered Also Not Returning Back
Mar 4, 2008many 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.
Comcast Emails Bounced Back
Jun 20, 2008Is 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,
Plesk 11.x / Linux :: Emails Loop Back To Original Servers Address
Dec 2, 2014I 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
Supermico Minis Back To Back
Jun 19, 2007Can 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 RelatedDoes Your Provider Back Up Your VPS Or Do You Back It Up Yourself
Nov 10, 2009Many 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 RelatedRDNS
Apr 11, 2008I think this is related to rDNS.
[url]
If you take a look at URL above, the lookup for the IP leads to nsmx.net where as the lookup for nsmx.net leads to another IP.
The IP should resolve to host6.nsmx.net, how am i supposed to fix that?
RDNS
Sep 22, 2007i cant sent emails to Hotmail from my domains so make a Spam Database Lookup from dnsstuff for my main ip 72.249.101.164
here are the results
"72.249.101.164 has no reverse DNS entry; some mail servers may not accept your mail."
and i also not listed to any database.
Can someone check the and tell me if
- RDNS are ok
- and if this spam databases include Hotmai spam databases?
My hosting provider tell me that RDNS are ok and that Hotmail black listed the server IP
Comcast PRO And RDNS
May 7, 2008I 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 ...
Manual Rdns
May 27, 2008I was told by the data center NOC that I can manually handle rdns/ptr requests myself, as long I do the below.
Set up your name servers to respond to the reverse dns inquiries that we would forward to you.
Can anyone shed light on this? What if someone requests rdns on 32 IP's in one shot for example, how would you go about doing this?
Setting Rdns
Jan 15, 2008I set rdns by contacting the dedicated server host. I am switching to a colo environment soon, do I still contact the ISP who issues the IPs for the rdns requests or can I set them myself somehow on my servers?
If I eventually get my own IPs through ARIN, how do I set rdns? Do I just get some script to set the PTR records on my own servers?
DK, SPF And RDNS Is Ok, But Spam Too!
Nov 8, 2008Im configured domainkey, spf and rdns exactly on my server, but my outgoing email to yahoo is spam too.
My sent email to yahoo (Header): ....
How To Set RDNS For My 2nd IP Address
May 16, 2007I have two ISP lines coming to my router which is connected to a Exchange mail server. Both ISP has given me dedicated IP addresses such as:
ISP1 = 217.105.25.94
ISP2 = 62.15.125.44
Now my ISP1 IP address has a reserve DNS set and when the mails are send via this line no problem, but my ISP2 IP does not have a reverse DNS so some mails are bouncing back due to the face the receiving mail server is checking the IP against the DNS.
How can I solve this issue, or normally who can set this rDNS?
New VPS RDNS Not Resolving
Nov 15, 2007Just got set up with a new VPS and while looking to see if my IPs were blacklisted, I came across a RDNS warning. I've been on some form of shared hosting since I've been on the Internet, so much of the VPS stuff is new to me (though it is managed). Everything I've read says that RDNS is important for sending mail so the receiving end can verify where mail is coming from, but I thought I would ask here regarding my specific issue.
I've got four IPs on my account. The first ip, x.x.x.67, is the host IP(ie host.example.com). Most of my domains are using that IP at the moment since I just got set up, but I do have another domain on the last IP in my account, x.x.x.70. When I first did a RDNS check on my main IP I got a domain that I've never seen before, and all other IPs on my account don't resolve at all.
I sent a ticket off to the host, and they set the RDNS record correctly for the main IP on my account, but the other three still fail to resolve. When I asked the host about it in a ticket, the response that I got was
Quote:
Normally, we set RDNS for the main IP address to hostname of the server.
The RDNS for your server has been setup properly. Please get back to us if you need any further assistance.
So basically I'm clueless. Does it matter that the other three IPs I have available don't resolve at all? The domain on the x.x.x.70 IP, which doesn't resolve, is an e-commerce site that depends almost exclusively on e-mail for its business. Doesn't the lack of RDNS resolution mean that I'll be out of luck sending mail to AOL, Yahoo, Hotmail, etc etc on that account? Even though I don't have sites on the middle two IP addresses yet, I fully plan to put sites there within the next couple of months... could they have the same problem?
It's frustrating since I obviously have no control over RDNS records, and the host's staff is being a little obtuse about it.
Easy Way To RDNS
Sep 20, 2007my host won't do it for me, they said I have to do it myself... Is there anyway you guys can show me how to reverse dns in centos?
View 6 Replies View RelatedHow To Setup RDNS (Reverse DNS)
Apr 2, 2008I was wondering if anyone could assist me on how to setup RDNS?
View 4 Replies View RelatedHow To Setup RDNS In CPanel
Jul 9, 2008This is the output at RIPE NCC's web update interface:
***Info: Authorisation for parent [inetnum] 193.53.87.0 - 193.53.89.255
using mnt-domains: authenticated by: ITECH-MNT
***RDNS: (related to ns1.infinitetech.in, ns2.infinitetech.in) ERROR (20 points):
Could not get an SOA record from ns1.infinitetech.in, ns2.infinitetech.in (193.53.87.2).
***RDNS: (related to set) ERROR (20 points):
The IP address 193.53.87.2 is identical for the nameserver(s) ns1.infinitetech.in, ns2.infinitetech.in found in the submitted domain object.
***Error: There are 20 or more problem points. Delegation was not successful.
This is what I am trying to submit:
domain: 87.53.193.in-addr.arpa
descr: Reverse Delegation for Infinite Technologies
admin-c: ITGR-RIPE
tech-c: ITGR-RIPE
zone-c: ITGR-RIPE
mnt-by: ITECH-MNT
nserver: ns1.infinitetech.in
nserver: ns2.infinitetech.in
changed: noc@infinitetech.in 20080101
source: RIPE
password: secret_here
Following the guide available at:
[url]
Now, how do I create the SOA record on a cPanel based server? I created a new zone, rdns.infinitetech.in and now what? I don't see SOA record option at all in the drop down list!
Unless I misunderstood what an SOA record is, I have no idea how to implement rDNS. Anyone?
If any RIPE NCC member/participant is available to answer this question directly it would be awesome! Others, give it your shot - I do understand that most of you are ARIN members/participants.
RDNS Database - PTR Record
Nov 13, 2007It seems our rDNS database is not responding to the PTR record. its on a cpanel server
View 9 Replies View RelatedEmail Issues With AOL Despite RDNS And No IP Blocks
Jan 25, 2008This is an issue I've been having for a few months now and haven't been able to resolve yet with my data center, AOL support and the company who manages the server for me. My main reason for posting this is for a fresh set of eyes and to see if anyone else has had a similar problem in the past (and how they fixed it)
The issue is this:
I set up a dedicated server to host my web design clients a few months back and no one has been able to send to or receive mail from AOL addresses. I've gone through everything at the postmaster.aol.com site and have ensured that reverse DNS records are in place for all IPs associated with the server, as rDNS is a mandatory requirement for AOL.
Once my support requested was finally elevated to a real AOL support tech, they confirmed that my IP was not being blocked by their servers and are still under the impression that the problem must be on my end somewhere. Because this problem only occurs with AOL (we can send/receive with all other big providers - yahoo, hotmail, gmail, hush, etc), my server management team are fairly certain it must be an issue on AOL's side.
When sending mail from an AOL address, it bounces back with an error like so (real emails replaced with example addresses):
451 <email@exampledomain.com>... exampledomain.com: Name server timeout
Message could not be delivered for 2 hours
Message will be deleted from queue
When sending mail from my server, it bounces back with an error like so:
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:
exampleaddress@aol.com
retry timeout exceeded
When attempting to manually deliver a message to AOL from the Mail Queue in WHM, I get an error like so:
Message xxx-example-number is not frozen
delivering xxx-example-number
Connecting to emr-d01.mx.aol.com [205.188.159.2]:25 ... failed: Connection timed out (timeout=5m)
LOG: MAIN
emr-d01.mx.aol.com [205.188.159.2] Connection timed out
Connecting to emr-m01.mx.aol.com [64.12.136.169]:25 ... failed: Connection timed out (timeout=5m)
LOG: MAIN
emr-m01.mx.aol.com [64.12.136.169] Connection timed out
LOG: MAIN
== example@postmaster.aol.com R=lookuphost T=remote_smtp defer (110): Connection timed out
When attempting a manual telnet test from my server to AOL's mail server at , it also times out with the following:
Trying 64.12.137.184 (connection timed out)
Trying 205.188.156.248 (connection timed out)
Trying 205.188.159.57 (connection timed out)
telnet: Unable to connect to remote host: Connection timed out
The AOL support tech explained that if my server IP were being blocked, it would return messages with a block error code instead of timing out. They suggested my firewall was blocking AOL's server....but both my data center and server management company said that isn't the case.
Because I can't duplicate this problem with anyone but AOL accounts, I don't know what else to troubleshoot or look for. I know AOL is notorious for blocking IPs and most email related problems are usually for lack of rDNS, but neither of those issues are the problem in this situation...so I don't know what else to try. My server management company (PSM) and AOL (once they finally elevated me to a real tech support person), have been very patient and helpful....but we still haven't been able to identify the problem and I feel incompetent for not being able to contribute on my own. I've researched for weeks and certainly understand more than I did, but still far less than they do.
AOL did direct me to a Windows Server troubleshooter relating to UDP packet size limitations with some firewalls that could cause MX query timeouts with AOL, Earthlink and Quest...but because I'm on an Apache server...I didn't know if that could be related at all to my issues (not to mention that I didn't even know what any of that meant until I went and looked up what a UDP packet actually was. I'm still not entirely sure I understand it). Even so, I did send the information to Platinum Server Management a short while ago, but haven't heard back yet.
Anyways.... in the meantime, I thought I'd check here in case anyone else had the same issue or saw something obvious we might not be considering.
My server details are as follows. I included my data center and management company details to illustrate that people far more qualified and intelligent than myself have performed the most common and obvious troubleshooters so far:
Pentium IV 2.8GHz /1GB DDRAM /120GB EIDE HDD
OS: CentOS 4.3
cPanel/WHM
Main Server IP: 66.79.163.138
Example Domain on the server: vedadesigns.net
Data Center: Dediwebhost.com (awesome service & fast support)
Initial Server Setup & Management: Platinum Server Management (I just can't say enough good things about these people)
Is Rdns Compulsary Now For Mail Servers
Sep 6, 2007I don't know much about technical details of mail servers. But i want to discuss a serious problem i am facing now. I have a reseller account with jodohost. I am not a reseller but i need this to host 20 of my own and client sites. During last few days no. of emails coming to us dropped almost 60% and suddenly i found that i was not getting emails from few of my clients. Then today i got a call from two of them and they said that all emails they were sending to me, were bouncing back.I asked them for a copy of bounced emails which they sent to my gmail account and i forwarded it to my jodohost support. This the response i got-
All of our mail servers have reverse DNS and mails are delivered. anyone not having rDNS is not able to mail much of the internet already, they really must talk to their system administrators and get reverse DNS setup.
Now they say that my clients do not have rdns at their mail servers and emails from them can not be delivered to my account.
Is rdns compulsory to send emails from a mail server these days?
But in that case i may not get emails from so many inquires?
Whitelist Domain Which Fails Rdns Check
Oct 11, 2007i have a cpanel dedicated server.
I have a problem with a client whose mails are getting rejected because it fails rdns check, can any one tell me how to add this domain in Exim's whitelist so that the mail is sent/recieved even if rdns or any other checks fail.
Client Host Rejected: RDNS/DNS Validation Failed
Jul 6, 2008Has anyone seen this before?
<sale-xxxxxxx@craigslist.org>:
xx.xx.xx.xx does not like recipient.
Remote host said: 554 <unknown[xxx.xx.xx.xx.xxx]>: Client host rejected: rDNS/DNS validation failed. Please setup matching DNS and rDNS records:
Giving up on xx.xxx.xx.xx.
We're running a Plesk Server with CentOS
Plesk 12.x / Linux :: SMTP Banner Not Resolving With RDNS
Dec 3, 2014SMTP banner resolution problem.
if you have 2 server and a rDNS correctly set
1 for site
1 as mail server
Smtp banner is not resolved
"Reverse DNS do not match SMTP banner"
So mail goes in spam directly.
Plesk 11.x / Linux :: PTR Record And RDNS - Qmail Delivery Failure
Jun 23, 2014I have a PTR record and RDNS works for me but when i want sending email to this server : 62.152.169.25 error occurs and mail undelivery received.
qmail: 1403506829.587606 delivery 2978: failure: 62.152.169.25_does_not_like_recipient./Remote_host_said:_550_Invalid_RDNS_entry_for_144.76.245.38/Giving_up_on_62.152.169.25./
Thousands Of Emails Being Sent Via Sendmail To Ne.jp Emails
Sep 4, 2007Since 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.
