Why errors when sending email "can't create (user) output file" and "Sorry, no mailbox here by that name. (#5.1.1)"

Posted on 2009-04-10
Last Modified: 2013-12-20
I just finished sending one email to 2 persons.  There are times I get a return email with one of these 2 errors.  Today I just received them again (its becoming frequent).  These users email do exist and I have interchange emails before with no problem.   The emails address I am sending from is an AOL address.

Can the EE tell me where is the problem?

First error:

"can't create (user) output file" -

The original message was received at Fri, 10 Apr 2009 08:48:43 -0500 from []

   ----- The following addresses had permanent fatal errors ----- <>
    (reason: can't create (user) output file)

   ----- Transcript of session follows -----
procmail: Error while writing to "/var/log/procmaillog"
procmail: Quota exceeded while writing "/var/spool/mail/name1"
550 5.0.0 <>... Can't create output

Second error:

"Sorry, no mailbox here by that name. (#5.1.1)" -

Hi. This is the qmail-send program at
I'm afraid I wasn't able to deliver your message to the following addresses.
This is a permanent error; I've given up. Sorry it didn't work out.

Sorry, no mailbox here by that name. (#5.1.1)
Question by:rayluvs
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
  • 7
  • 4

Expert Comment

ID: 24115686
If the recipient has forwarding enabled and the forward address has a problem, you will receive an error like that.

Author Comment

ID: 24115710
Yes both recipient emails are forwarding emails.  That is the email address I use are address that redirects the email to thier personal hotmail accounts.

If that's the case, what should I do.

Expert Comment

ID: 24115755
Can you send email directly to the forward addresses? or do they bounce?
PeopleSoft Has Never Been Easier

PeopleSoft Adoption Made Smooth & Simple!

On-The-Job Training Is made Intuitive & Easy With WalkMe's On-Screen Guidance Tool.  Claim Your Free WalkMe Account Now


Author Comment

ID: 24116632
sorry...wanted to make sure, only one is forwarded, the; the error "can't create (user) output file".  The one is a direct email (email for the error "Sorry, no mailbox here by that name. (#5.1.1)"


Accepted Solution

overdrive79 earned 500 total points
ID: 24137537
For the "can't create output file" error, that is an indication that the destination mailbox is over quota.  For the other box that replies with a 5.1.1., try sending to it from another account to see if it is valid.

Author Comment

ID: 24201316
HI...I was out of the country.

Understiood for the message "can't create output file" error, means mailbox is over quota or mil box full?

For For the other message, "Sorry, no mailbox here by that name. (#5.1.1), what does it mean exactly.  That email does exist.

Author Comment

ID: 24247286
Any suggestion?

Expert Comment

ID: 24247354
Verify that the recipient does not have any spam  blocking set up on their hotmail account.  I think it may be generating the 5 1 1 to discourage the sender from sending anything else to that recipient.  

Author Comment

ID: 24247406
Non of the accounts are hotmail.

How do I check for spam blocking setup on thier account?

Author Comment

ID: 24308798
Any suggestions....?

Author Closing Comment

ID: 31568903

Featured Post

Secure Your WordPress Site: 5 Essential Approaches

WordPress is the web's most popular CMS, but its dominance also makes it a target for attackers. Our eBook will show you how to:

Prevent costly exploits of core and plugin vulnerabilities
Repel automated attacks
Lock down your dashboard, secure your code, and protect your users

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

When it comes to security, there are always trade-offs between security and convenience/ease of administration. This article examines some of the main pros and cons of using key authentication vs password authentication for hosting an SFTP server.
This article is a collection of issues that people face from time to time and possible solutions to those issues. I hope you enjoy reading it.
After creating this article (, I decided to make a video (no audio) to show you how to configure the routers and run some trace routes and pings between the 7 sites…
This video gives you a great overview about bandwidth monitoring with SNMP and WMI with our network monitoring solution PRTG Network Monitor ( If you're looking for how to monitor bandwidth using netflow or packet s…

734 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question