Has anyone seen this? All information looks correct in objects, however mail kicks back with 550 5.1.1 resolver.adr.exrecipnotfound. I would expect to see this if there was no external contact. However that is not the case. Any thoughts? BILL

We have just run into the same problem potentially. Did you find a fix or the cause of this?

hi, whehave the same problem... i need to help to fix this issue. Tankyou 5.1.1 RESOLVER.ADR.ExRecipNotFound; not found

Can you post the full error received by the sender? We have seen this problem when there is a bad local cache or bad addresses in the personal contactsin Outlook on the clients PC.

hi,my server rejecting internal email addresses. Some users send email and this is rejected, but it does not happen with all users. The Others users send email without problem. And the non delivery report by this issue they are of any user of the Address book and not with some in specific. This are the messages errors: - introubleshooting assistant for exchange 2007 i have the next message error (150 messages):Message delivery to 'dominio.com.mx' failed on server server.dominio A message Tracking log entry was generated on server server.dominio at 05/30/2008 11:33:30 indicatig that a message send by yo@dominio.com.mx could not be delivered to 'dominio.com.mx' failed on server server.dominio. Check the status... Recipients:IMCEAEX-_0=SRV-MAIL-ORG_OU=FIRST-20ADMINISTRATIVE+20GROUP_CN=RECIPIENTS_CN=c+5lopez@dominio.com.mx Status 550 5.1.1 RESOLVER.ADR.ExRecipNotFound;not found ## -this is the message delivery in the mailbox user Claudia Lopez<mailto:IMCEAEX-_O%3DSEG-MAIL-ORG_OU%3DFIRST%2B20ADMINISTRATIVE%2B20GROUP_CN%3DRECIPIENTS_CN%3Dc%2B5Flopez@dominio.com.mx>La direccin de correo electrnico de este destinatario no se encontr en el sistema de correo electrnico de este destinatario. Microsoft Exchange no intentar volver a enviar el mensaje. Compruebe la direccin de correo del destinatario e intente, o bien proporcione el siguiente texto de diagnstico al administrador del sistema.#550 5.1.1 RESOLVER.ADR.ExRecipNotFound; not found ##

Do you have an Edge Transport server role? If so, is it synchronizing correctly? You can run Test-EdgeSynchronization from the powershell. Also, once edge synchronization takes place, I have had to occasionally restart the Microsoft Exchange Transport service on the Edge Transport server to get the server to recognize the new addresses.

Hi. tanks for your answers. I have aexchange server2007 SPK1, rollup2. this server have a mailbox server, client accessand hub transport server roles. and i have a fortimail 100. This aplliance its my relay for incoming and outgoing messages.

So, you do not have an edge transport server?

Have you created an external contact through the powershell or the console? If so, do those work?

One other thing, is the Exchange installation a clean install or did you upgrade. I ask because we did a clean install and then brought the mailboxes and contacts over. The problem we had was that some of our external contacts, and some of the addresses cached on local machines still referenced the old address. Are you sure that this is the correct reference? IMCEAEX-_0=SRV-MAIL-ORG_OU=FIRST-20ADMINISTRATIVE+20GROUP_CN=RECIPIENTS_CN=c+5lopez@dominio.com.mx My clean install looks similar to this example. IMCEAEX-_0=ORGNAME_OU=EXCHANGE-20ADMINISTRATIVE+20GROUP+20+28FYDIBOHF32SPDLT+29_CN=RECIPIENTS_CN=c+5lopez@dominio.com.mx _O= specifies the organization name you chose during the setup, and _OU= should be your administrative group name and is usually followed by a string of characters in parenthesis such as the gray part of the second example. If you are not sure these are correct, you can use ADSI edit to look them up. If the organization and administrative group in the error message and the ones stored in active directory do not match, then this is why you are receiving the error. Even if the smtp address is listed correctly because exchange does not use that address for internal routing.

Hi hazar1 1. I dont have a Edge Transport server.ihave only a server withmailbox server, client accessand hub transport server roles. And the fortimail for relay. 2. I have many contacts with external email address, and i dont have problems to send him. i import succesfull contacts with CSVDE import. 3.MyExchange and domain installation is a clean install,Idont upgrade. But,i exported"domain" usersfrom my last domain (w2000)with CSVDE and then later imported this users in my newserver domain. The mailboxes are new too. 4. Then i`m going to use ADSI to see the strings. thanks.

Sorry for the delay. I will review my notes and post later.

This might be way off. But i just had this issue and i had to resync my AD with my extrernal spam filter and now the mailboxes that were troubled are now working. Hope that helps some of you.