Solved

lost connection with _domain_ while sending HELO

Posted on 2003-10-21
6
1,387 Views
Last Modified: 2012-06-22
I can't seem to send emails to certain domains.  This problem was address before, but seems to be slightly different from mine.  

http://www.experts-exchange.com/Networking/Email_Groupware/Exchange_Server/Q_20679545.html?query=lost+connection+certain+domains&searchType=subtopics

Here's the lowdown:

I'm using Bynari Insight Server, and the mail queue error message for the failed emails says:
lost connection with mail-fwd.sbc-webhosting.com[216.173.237.169] while sending HELO

So I tried the whole nslookup routine that subsoniq laid out, and here what I typed and got:

Z:\>nslookup
Default Server: pdc.mixergroup.net
Address: 192.168.1.5

> set type=mx
> mail-fwd.sbc-webhosting.com
Server:  pdf.mixergroup.net
Address:  192.168.1.5

Non-authoritative answer:
mail-fwd.sbc-webhosting.com    MX preference = 50, mail exchanger = mail-fwd.sbc-webhosting.com

sbc-webhosting.com     nameserver = ns26b.sbc-webhosting.com
sbc-webhosting.com     nameserver = ns1.sbcidc.com
sbc-webhosting.com     nameserver = ns2.sbcidc.com
sbc-webhosting.com     nameserver = ns26a.sbc-webhosting.com
mail-fwd.sbc-webhosting.com     internet address = 216.173.237.169
mail-fwd.sbc-webhosting.com     internet address = 216.173.237.170
mail-fwd.sbc-webhosting.com     internet address = 216.173.237.171
mail-fwd.sbc-webhosting.com     internet address = 216.173.237.168
>exit

z:\>telnet ns26b.sbc-webhosting.com 25
Connecting To ns26b.sbc-webhosting.com...Could not open a connection to host on port 25 : Connection failed


And that's where I'm stuck.  I don't know if our DNS lookup is screwy, or even how to fix it.  Any help or direction would be greatly appreciated.

Cheers,
An
0
Comment
Question by:antran7
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 3
  • 2
6 Comments
 
LVL 16

Expert Comment

by:_nn_
ID: 9594075
Seems normal. ns26b.sbc-webhosting.com is a NS for the zone, not a MX.

# telnet mail-fwd.sbc-webhosting.com 25
Trying 216.173.237.171...
Connected to mail-fwd.sbc-webhosting.com.
Escape character is '^]'.
220 mail26d.sbc-webhosting.com SMTP RS ver 1.0.87vs
ehlo you
500 Command unrecognized

(So, ESMTP not understood, but)

helo you
250 mail26d.sbc-webhosting.com Hello xxx.xx.somewhere.net [xxx.x.xxx.xx], I'm listening
mail from: <toto@somewhere.net>
250 toto@somewhere.net... Sender ok
rcpt to: <postmaster@sbc-webhosting.com>
250 postmaster@sbc-webhosting.com... Recipient ok
quit
221 mail26d.sbc-webhosting.com closing connection
Connection closed by foreign host.


So, it could be :
- temporary network problems (at your site or your ISP), in which case the mails should go through some time later
- you have been listed as an open mail relay on some RBL site like www.ordb.org
0
 

Author Comment

by:antran7
ID: 9594399
Here's what happens when I try that path:


Z:\> telnet mail-fwd.sbc-webhosting.com 25
Connecting To mail-fwd.sbc-webhosting.com
220 mail26b.sbc-webhosting.com SMTP RS ver 1.0.87vs
571 from 65.67.33.161 We do not relay from you.
Connection to host lost.
Z:\>

and it rudely boots me out.

we're not on ordb.org, nor any other open relay database of consequence.  and the email never go through (we've waited weeks).

Does SBC think we're relaying mail through when we send to them?  Funny thing is our commericial account is with them.

Thanks for you help.  Know where I should go now?
An
0
 
LVL 16

Accepted Solution

by:
_nn_ earned 500 total points
ID: 9594935
Could be a misconfiguration. In any case, I don't see much possibilities but to contact them and try to find out why they are rejecting you.

For reference : http://openrbl.org/#65.67.33.161
I hope SBC isn't using of of these 4 "positives", or else, I'd say that their policy is clearly abusive.

Good luck.
0
SharePoint Admin?

Enable Your Employees To Focus On The Core With Intuitive Onscreen Guidance That is With You At The Moment of Need.

 

Author Comment

by:antran7
ID: 9599041
Thanks for you help.  I got off one of the 4 'positivies' on openrbl.org (the only one that would allow me to remove myself from their list).

I'll try contacting SBC and see what's up.  I'll let you know how it goes.  Thanks again for you help and direction.

An
0
 

Author Comment

by:antran7
ID: 9610228
I called them, and we were listed on their open-relay database.  They have their own private one.

Thanks for you help and direction.

An
0
 

Expert Comment

by:sanjurupali
ID: 9734835
nice reasoning _nn_ .good
0

Featured Post

Secure Your Active Directory - April 20, 2017

Active Directory plays a critical role in your company’s IT infrastructure and keeping it secure in today’s hacker-infested world is a must.
Microsoft published 300+ pages of guidance, but who has the time, money, and resources to implement? Register now to find an easier way.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Microsoft Outlook provides an easy way to recover permanently deleted items. When you empty the Deleted Items or simply deleted an Outlook data items using shift+Del key then it can be recovered using Registry Key settings.  Caution- Wrong Registry…
As tax season makes its return, so does the increase in cyber crime and tax refund phishing that comes with it
The purpose of this video is to demonstrate how to set up Lists in Mailchimp. This will be demonstrated using a Windows 8 PC. Mailchimp will be used. Log into your Mailchimp account. : Click on Lists. Click on Create List Button : Choose the desi…
Sending a Secure fax is easy with eFax Corporate (http://www.enterprise.efax.com). First, Just open a new email message.  In the To field, type your recipient's fax number @efaxsend.com. You can even send a secure international fax — just include t…

726 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question