Comments on: Lotus Notes error message: 550 5.1.1 RESOLVER.ADR.RecipNotFound; not found http://itknowledgeexchange.techtarget.com/itanswers/550-511-resolveradrrecipnotfound-not-found/ Wed, 22 May 2013 18:27:48 +0000 hourly 1 By: jhamn http://itknowledgeexchange.techtarget.com/itanswers/550-511-resolveradrrecipnotfound-not-found/#comment-87825 jhamn Wed, 09 Feb 2011 19:55:03 +0000 #comment-87825 i have escalated this to our on shore team and once they have it resolved, they’ll send us the detailed solution. Will keep you posted as to the steps they’re about to give us. thanks gabe9527

]]> By: gabe9527 http://itknowledgeexchange.techtarget.com/itanswers/550-511-resolveradrrecipnotfound-not-found/#comment-87783 gabe9527 Wed, 09 Feb 2011 09:19:49 +0000 #comment-87783 move from answer as it did not answer the question…

There r several causes….
If mailbox is not local and Mail Relay is not enabled, or the sending address is invalid
Sending mail to recipients outside of the domain where this is not allowed
Attempting to send thru server which requires authentication and have not supplied credentials…. Check for the same i.e. mail server / email program, is attempting to send
without SMTP authentication, or when the recipient’s mailbox has been suspended. check for if the recipient’s mailbox has been disabled or not.
Check for either DNS or ISP’s DNS is not configured correctly for the recipient’s mailserver details, or the recipient’s MX record is configured incorrectly.
Check one by one and keep me update !

]]> By: gabe9527 http://itknowledgeexchange.techtarget.com/itanswers/550-511-resolveradrrecipnotfound-not-found/#comment-87782 gabe9527 Wed, 09 Feb 2011 09:17:04 +0000 #comment-87782 Also, the said user’s email has been migrated to exchange and we were using lotus notes

OK it is highly likely there is no route to a Notes Hierarchical name… ie name/ou/cert

If you are using the Exchange connector and / or directory assistance make sure you update this to exclude the notes name

]]> By: jhamn http://itknowledgeexchange.techtarget.com/itanswers/550-511-resolveradrrecipnotfound-not-found/#comment-87752 jhamn Tue, 08 Feb 2011 19:20:02 +0000 #comment-87752 when i tried sending to user’s internet address and it get through his mailbox however when sending to his internal address (with a slash), the error started to occur. The user’s domain and our domain has a direct connection thru global email directory. Also, the said user’s email has been migrated to exchange and we were using lotus notes.

]]> By: gabe9527 http://itknowledgeexchange.techtarget.com/itanswers/550-511-resolveradrrecipnotfound-not-found/#comment-87744 gabe9527 Tue, 08 Feb 2011 17:43:24 +0000 #comment-87744 550 5.1.1 “RESOLVER.ADR.RecipNotFound”

Check the sending address and make sure the Domino server DNS is working correctly. Also check Domain documents to be sure you dont forward directly to this address.

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