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#5.7.1 smtp;550 5.7.1 error

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#5.7.1 smtp;550 5.7.1 error - 30.Apr.2004 6:29:00 PM

dnartin

Posts: 1
Joined: 30.Apr.2004
From: Canada
Status: offline

Hi All,
Maybe you can help me out with this.
I can send emails to everyone outside the network, except for one.
When I try to send to this one, I get a message back saying this:

Your message did not reach some or all of the intended recipients.

Subject: Test Message
Sent: 4/29/2004 8:58 AM

The following recipient(s) could not be reached:

'service@echucacih.com' on 4/29/2004 8:58 AM
You do not have permission to send to this recipient. For assistance, contact your system administrator.
<SIL-DC1.office.supremeinternational.com #5.7.1 smtp;550 5.7.1 Access denied>

I am checking some settings in Exchange Server, it is the first time that I see something like this. If you have any ideas let me know,
thank you

Post #: 1

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RE: #5.7.1 smtp;550 5.7.1 error - 1.May2004 4:38:00 PM

yohansung

Posts: 1
Joined: 1.May2004
From: Los Angles
Status: offline

Hello,
I have the same problem. I just configured the smtp to receive e-mails from outside and no problems on receiving mails, but no one can send to outside of the network even the administrator. Any help will be appreciated!

(in reply to dnartin)

Post #: 2

RE: #5.7.1 smtp;550 5.7.1 error - 28.May2004 10:10:00 AM

Guest

Same problem for only one adress. Everyone in the society can send to a person, except one. No restrictions are enabled, I've never seen it.

(in reply to dnartin)

Post #: 3

RE: #5.7.1 smtp;550 5.7.1 error - 28.May2004 1:46:00 PM

DAMV

Posts: 30
Joined: 25.Nov.2002
From: Spain
Status: offline

I have the same problem, but I cannot to send any external domain. I recived the 550.5.7.1 Unable to relay error.

I have 1 back-end(LAN) and 1 Front-end(DMZ). Both in the same routing group. I want to migrate the outgoing from my exchange 5.5 to this structure.
I have 1 domain and this is in the policy
With the following configuration I obtained the 550.5.7.1 Unable to relay for "user@externaldomain"
=====BACK-END: =================================
*Authentication: Anonymous,Basic,Integrated Windows
*Connection: All except the list bellow
*Relay: Only the list bellow
All all computers which successfully authenticate to relay, regardless of the list above
=====FRONT-END: ================================
*Authentication: Anonymous
*Connection: All except the list bellow
*Relay: Only the list bellow
Allow all computers which successfully authenticate to relay, regardless of the list above
* Delivery=Configure External DNS: xxx.xxx.xxx.xxx
------------------------------------------------
I've a SMTP CONNECTOR:
Use DNS to route to each address space on this connector and the Local Bridheads is the FRONT-END. The Address Space is SMTP=* and cost=1. The option "Allow messages to be relayed to these domains" is disabled.
But if I check that option I can to send to Internet, but is wrong because is a open relay server.
=================================
How do I configure my server for sending mail to internet? Thank you for all

(in reply to dnartin)

Post #: 4

RE: #5.7.1 smtp;550 5.7.1 error - 28.May2004 2:21:00 PM

pjhutch

Posts: 3055
Joined: 21.Jul.2001
From: W Yorks, England
Status: offline

Our FE SMTP server is set as:
Try something like this:

=====FRONT-END: ================================
*Authentication: Anonymous,Basic, Windows Int.
*Connection: Only list bellow (list of IP address allowed to send SMTP incl Exchange, Unix servers)
*Relay: Only the list bellow
(list of IP addresses allow to send SMTP incl Exchange, Unix server)
Allow all computers which successfully authenticate to relay, regardless of the list above: No
* Delivery=Configure External DNS: xxx.xxx.xxx.xxx

(in reply to dnartin)

Post #: 5

RE: #5.7.1 smtp;550 5.7.1 error - 28.May2004 6:15:00 PM

ajhugo

Posts: 312
Joined: 6.May2004
From: Indianapolis, Indiana, US
Status: offline

Also that error can indicate a problem with the receiving server. We have users submit tickets with that error alot and a lot of time it ends up being a communication error with the receiving mail server. Once we can verify a good connection to thier server the mail is delivered with no problem.

If this is the case you can use http://www.dnsreport.com/ to verify connectivity to an address or mail server.

(in reply to dnartin)

Post #: 6