sdcoker
asked on
Getting NDR 3030 Errors for all emails sent to One specific Mail Domain mail.charter.net - SMTP unable to authenticate
Hello,
This has been killing me. I am not listed as a spam relay on dnsstuff.com. I don't show any DNS issues as I can ping and resolve mail.charter.net. I do not get NDR errors for any other domain. I can send email no problem to anyone on the charter.net domain from my yahoo account. My queue is stuck on retry for charter.net and when I try to authenticate to it using telnet mail.charter.net 25, I get the correct prompt.
Our office is on Exchange 2003 with SBS 2003. I have read the articles Q_21190821 and a few others on expert-exchange but can't seem to get anywere with this problem. Can anyone tell me how to make the authentication with this mail domain work again?
Thank you so much in advance for any help I can get.
This has been killing me. I am not listed as a spam relay on dnsstuff.com. I don't show any DNS issues as I can ping and resolve mail.charter.net. I do not get NDR errors for any other domain. I can send email no problem to anyone on the charter.net domain from my yahoo account. My queue is stuck on retry for charter.net and when I try to authenticate to it using telnet mail.charter.net 25, I get the correct prompt.
Our office is on Exchange 2003 with SBS 2003. I have read the articles Q_21190821 and a few others on expert-exchange but can't seem to get anywere with this problem. Can anyone tell me how to make the authentication with this mail domain work again?
Thank you so much in advance for any help I can get.
do you have active directory configured with the same domain name ?
ASKER
My internal domain name is domainname.local and this is what's configured with AD
I do host three different mail domains on this same server using Recipient policies. charter.net has always worked as someone hosts an e-commerce site on one of my servers and all email orders received go to her charter.net email account
I do host three different mail domains on this same server using Recipient policies. charter.net has always worked as someone hosts an e-commerce site on one of my servers and all email orders received go to her charter.net email account
ASKER
Could Charter.net be rejecting my server's login for some reason all of a sudden?
ASKER
I do see one other diifferent mail domain called greaterbar.net stuck on retry in the queue.
ASKER
I have another server on a different class C network segment totally separated from this server who is on a different class B network and firewall alltogether. I tried sending an email to charter.net from that Exchange server and got the same problem. May be a problem with the ISP but I've never seen this before. Sorry about the rambling. just trying to provide as much info as possible before I call the ISP.
SOLUTION
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Have you checked, if your Exchange have any special SMTP connectors specified for this domain.
If the connector is specified incorrectly, your Exchange will not use MX record.
See, that you have only default connector and no other in Exchange.
If the connector is specified incorrectly, your Exchange will not use MX record.
See, that you have only default connector and no other in Exchange.
ASKER
papmichael,
I get
charter.net MX preference = 10, mail exchanger = mail.charter.net
but I do not get the rest of the info below that you have starting with nameserver=auth1.ns.charte
I am able to successfully telnet to mail.charter.net port 25
prashsax the default SMTP connector is setup with default settings and has not changed.
I get
charter.net MX preference = 10, mail exchanger = mail.charter.net
but I do not get the rest of the info below that you have starting with nameserver=auth1.ns.charte
I am able to successfully telnet to mail.charter.net port 25
prashsax the default SMTP connector is setup with default settings and has not changed.
Does mail.charter.net resolves for Internal IP address or a Public IP address from your exchange server.
ASKER
it resolves doing this straight from the exchange server:
C:\>ping mail.charter.net
Pinging mail.charter.net [209.225.8.224] with 32 bytes of
Reply from 209.225.8.224: bytes=32 time=37ms TTL=50
Reply from 209.225.8.224: bytes=32 time=43ms TTL=50
Reply from 209.225.8.224: bytes=32 time=31ms TTL=50
Reply from 209.225.8.224: bytes=32 time=31ms TTL=50
Ping statistics for 209.225.8.224:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 31ms, Maximum = 43ms, Average = 35ms
C:\>ping mail.charter.net
Pinging mail.charter.net [209.225.8.224] with 32 bytes of
Reply from 209.225.8.224: bytes=32 time=37ms TTL=50
Reply from 209.225.8.224: bytes=32 time=43ms TTL=50
Reply from 209.225.8.224: bytes=32 time=31ms TTL=50
Reply from 209.225.8.224: bytes=32 time=31ms TTL=50
Ping statistics for 209.225.8.224:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 31ms, Maximum = 43ms, Average = 35ms
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ASKER
Ok, now we see an error Prashsax. Here is what I get:
553 #5.1.8 Domain of sender address sdcoker@domain.local> does not resolve
mail from:user@mydomain.com
250 sender user@mydomain.com> ok
rcpt to:user@charter.net
452 Too many recipients received this hour
Do you know what my next move would be on this?
553 #5.1.8 Domain of sender address sdcoker@domain.local> does not resolve
mail from:user@mydomain.com
250 sender user@mydomain.com> ok
rcpt to:user@charter.net
452 Too many recipients received this hour
Do you know what my next move would be on this?
Ok, they have installed some sort of ANTI-SPAM software which limits the number of emails received per hour.
The problem is likely to be on the charter.net.
You may be lucky one some occasion when you have send mail from yahoo.com
Try and send mail from both places simultaneously.
Yahoo is able to send mails because they try for couple of hours and may be in next hour the limit of mail received is not finished.
This problem is not at your end. You need to call them.(charter.net)
The problem is likely to be on the charter.net.
You may be lucky one some occasion when you have send mail from yahoo.com
Try and send mail from both places simultaneously.
Yahoo is able to send mails because they try for couple of hours and may be in next hour the limit of mail received is not finished.
This problem is not at your end. You need to call them.(charter.net)
digging it up finally gave us the answer..
:)
:)
ASKER
One of our customers who uses a user@charter.net call them and they said that the way around it would be to use the mail.charterinternet.com mail domain name. This resolves to a different ip address then just mail.charter.net.
How do I tell my server to use this ip for mx record? Do I add a host A record in DNS?
How do I tell my server to use this ip for mx record? Do I add a host A record in DNS?
Just create a SMTP Connector for charter.net domain and specify IP address of mail.charterinternet.com.
This would make exchange to use the mail.charterinternet.com instead of MX record.
This would make exchange to use the mail.charterinternet.com instead of MX record.
Sorry, forgot this link to Configuring SMTP connectors.
http://www.msexchange.org/tutorials/Configuring-SMTP-Connector.html
http://www.msexchange.org/tutorials/Configuring-SMTP-Connector.html
ASKER
Hey Prashsax, I created the smtp connector for charter.net and named the address space charter.net with cost of 1 but I don't see anywhere in this article where the config is for putting in the ip address for mail.charterinternet.com.
ASKER
Sorry, I didn't mean to address that question to one person. Anyone?
Goto General Tab on the connector properties.
Choose the Option of "Forward all mails through this connector......"
Then in the text box below, fill in the IP address.
Make sure your put IP address within Square brackets.
e.g [95.65.78.102]
Choose the Option of "Forward all mails through this connector......"
Then in the text box below, fill in the IP address.
Make sure your put IP address within Square brackets.
e.g [95.65.78.102]
ASKER
Thank you Papmichel and Prashsax.
That address charter gave me didn't work but we were able to get someone over there to finally lift the block on our IP address for SMTP communication with whatever spam filter software they use. Thanks again for your help. I learned a lot from you guys on this one.
That address charter gave me didn't work but we were able to get someone over there to finally lift the block on our IP address for SMTP communication with whatever spam filter software they use. Thanks again for your help. I learned a lot from you guys on this one.