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External email always bounces -outgoing

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15 replies

by jet1415 1 view

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I believe I have everything correctly configured in Exchange 2000 SP3 to deliver outgoing messages to external email addresses but they always bounce. There is not problem receiving email and can send internal email without problems. I can ping and tracert external addresses without problems. The only thing I can think of is I have misconfigured SMTP or DNS. I have already read every Microsoft TechNet article on this and have tried all their fixes and tips. If anyone has ever seen this happen or could give me some ideas on what to do, please let me know. Thanks.

15 replies

by joseph moore

We need a little more info.

Which bounceback message do you get when you try and deliver outbound e-mail?

by jet1415

OK, i get the following error message:

This is an automatically generated Delivery Status Notification.

Unable to deliver message to the following recipients, due to being unable to connect successfully to the destination mail server.

But it is not the destination mail server because this happens on every outgoing message going to an external email address. The details.txt on the reject email that comes to me says the following:

Reporting-MTA: dns;csisexch.csis.fedex.com

Final-Recipient: rfc822;john.doe@bbnow.net
Action: failed
Status: 4.4.7
X-Display-Name: John Doe (john.doe@bbnow.net)
Of course, i changed the email address on this one to a fake address but you get the idea. This is the same messages I get on every one of them.

Thanks.

Jennifer

by joseph moore

Do you run a firewall? If so, is TCP port 25 open for outbound connection for your Exchange server?
It could be possible for a PING to go through a firewall, but the SMTP port (what is used to send e-mail) is closed.
hope this helps

by paulo.sedrez

Seams to me that you configured a mail hub in Exchange, that is, a host to which exchange will send all messages to final delivery. That host is not responding.

Check where csisexch.csis.fedex.com appears on the configuration.

--Sedrez

by jet1415

I didn't configure anything and the host csisexch.csis.fedex.com is the only exchange server in my organization so it would be the only host. What do you mean by "check where csisexch.csis.fedex.com appears on the configuration"?

by jet1415

I have my own DNS servers and the mail server is listed in DNS as a Mail Exchanger.

by charles_j_smith

My first guess which I am going to post here would be that your email client is misconfigured. Configure your email client to authenticate outgoing emails (most likely using the same credentials as those which you are checking your mail with) and it should work fine - provided this is really the problem.

In outlook 2000, as an example, you configure yourself to authenticate against your smtp server by click tools, email accounts, change (assuming you already have something configured here) and then click more settings, outgoing server and then click Use same settings as my email server. If that doesn't work and you have a different smtp server you wish to use to send mail, specify the different account settings here and then ensure that this server is listed in your smtp server configuration.

If this does not work for you, then please copy/paste the bounce message you get into this posting and we'll figure it out.

Chuck

If this solution does work, then this is default Exchange 2000/client behavior because Exchange 2000 does not automatically relay messages unless it knows who you are. That makes sense nowadays with all the spam going on....

by carlos.nino

I just did a ping to csisexch.csis.fedex.com and I got a Host not Found error.
There is no way you can send mail if that is what you have configured as SMTP server.

by jet1415

This host is no longer in use - that's why you can't ping it. :) Thanks for responding!

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