The CV211 Laptop USB Console Adapter provides a direct Laptop-to-Computer connection for fast and easy remote desktop access with no software to install.
Course Of The Month
4 days, 14 hours left to enrollBecome a Premium Member and unlock a new, free course in leading technologies each month.
Solved
STMP Error
Posted on 2010-11-23
I have a user that sent an email and got the following response:
An error occurred while trying to deliver this message to the recipient's e-mail address. Microsoft Exchange will not try to redeliver this message for you. Please try resending this message, or provide the following diagnostic text to your system administrator.
#< #5.0.0 X-Postfix; host smtp801.microsoftonline.co
Assuming the email address is valid, what is the problem, and what setting do I change from exchange 2007 management console?
An error occurred while trying to deliver this message to the recipient's e-mail address. Microsoft Exchange will not try to redeliver this message for you. Please try resending this message, or provide the following diagnostic text to your system administrator.
#< #5.0.0 X-Postfix; host smtp801.microsoftonline.co
Assuming the email address is valid, what is the problem, and what setting do I change from exchange 2007 management console?
[X]
Welcome to Experts Exchange
Add your voice to the tech community where 5M+ people just like you are talking about what matters.
- Help others & share knowledge
- Earn cash & points
- Learn & ask questions
3-
3
2- +1
9 Comments
Active today
Check the users email address - it would appear you have either typed it in incorrectly, or the user has gone.
Another alternative is the servers at their end are clustered and you managed to find the one node in the cluster that doesn't have this particular user configured on it.
Alan
Another alternative is the servers at their end are clustered and you managed to find the one node in the cluster that doesn't have this particular user configured on it.
Alan
The Recipent Email Address doesnt Exist. "5.1.1 User unknown"
The server you have contacted as the desternation is not accepting the email as you are trying to send to an address that it cannot route or deliver too.
If 100% sure the address is correct then the Postfix server is probably using this message as a denial message due to some other reason such as the sender has been tagged as spam or has been blacklisted;
Check the domains at mxtoolbox.com
The server you have contacted as the desternation is not accepting the email as you are trying to send to an address that it cannot route or deliver too.
If 100% sure the address is correct then the Postfix server is probably using this message as a denial message due to some other reason such as the sender has been tagged as spam or has been blacklisted;
Check the domains at mxtoolbox.com
www.mxtoolbox.com
This website had a blacklist checker, you can then contact the seperate companys listed that have you blacklisted and request removal if you are confidant that you are not sending spam email from your site, i.e. a virus or mail bot on you internal network or exchange server
This website had a blacklist checker, you can then contact the seperate companys listed that have you blacklisted and request removal if you are confidant that you are not sending spam email from your site, i.e. a virus or mail bot on you internal network or exchange server
According to www.mxtoolbox.com blacklist checker we are fine with the exception of some timeouts on the last three
CYBERLOGIC TIMEOUT ERROR, Reponse code=2 0
EMAILBASURA TIMEOUT 0
SPAMRBL TIMEOUT 0
CYBERLOGIC TIMEOUT ERROR, Reponse code=2 0
EMAILBASURA TIMEOUT 0
SPAMRBL TIMEOUT 0
To Check SpamRBL lists try this site;
http://www.anti-abuse.org/multi-rbl-check/
Blacklisting is only one option.
My next question would be;
Can you email anyone at the desternation company? or are you only having problems sending to this one user.
Can they (the destination company) send to you or your users without any problems, I would then try to reply to one of thier emails so the correct email address is used.
http://www.anti-abuse.org/multi-rbl-check/
Blacklisting is only one option.
My next question would be;
Can you email anyone at the desternation company? or are you only having problems sending to this one user.
Can they (the destination company) send to you or your users without any problems, I would then try to reply to one of thier emails so the correct email address is used.
Active today
Where on earth did Blacklists come into the equation when the error is Unknown User?
That is a complete Red Herring and should be ignored.
That is a complete Red Herring and should be ignored.
Featured Post
Check which ports are open to the outside world. Helps make sure that your firewall rules are working as intended.
One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.
Question has a verified solution.
If you are experiencing a similar issue, please ask a related question
Lotus Notes – formerly IBM Notes – is an email client application, while IBM Domino (earlier Lotus Domino) is an email server. The client possesses a set of features that are even more advanced as compared to that of Outlook. Likewise, IBM Domino is…
In-place Upgrading Dirsync to Azure AD Connect
In this video we show how to create a Contact in Exchange 2013. We show this process by using the Exchange Admin Center.
Log into Exchange Admin Center.: First we need to log into the Exchange Admin Center.
Navigate to the Recipients >> Contact ta…
To show how to create a transport rule in Exchange 2013. We show this process by using the Exchange Admin Center.
Log into Exchange Admin Center.: First we need to log into the Exchange Admin Center.
Navigate to the Mail Flow >> Rules tab.: To cr…
Suggested Courses
Course of the Month4 days, 14 hours left to enroll
688 members asked questions and received personalized solutions in the past 7 days.
Join the community of 500,000 technology professionals and ask your questions.