Repair Smtp Protocol Returned A Permanent Error 550 Unknown User (Solved)

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Smtp Protocol Returned A Permanent Error 550 Unknown User


Please retry later. Ask Best Of Forum Glossary Members Only Newsletter Facebook Podcast on Business Books My Library All Articles … More Search Options 50 Recent Entries All Categories All Entries by Date Social Comments Jeff McCulloch August 25, 2005 at 7:23 am If I send e-mail to a group in Outlook (POP3 through Yahoo) and one recipient's e-mail account has reached quota, does that can you please help me what is this error and what causes this error The original message was received at Wed, 6 Apr 2011 19:07:14 +0530 from [] --- The this contact form

It sounds like your message is somehow tripping their spam or anti-malware filters.

28-May-2011 Reply Brian May 28, 2011 at 10:38 pm Yes Leo that was exactly what was wrong. And don't forget to check your mail logs for bounce messages too! Thanks in advance 553 sorry, Authentication failed or timed out. She knows of no changes on her end and hers is the only address that I have noticed being bounced back.

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When an email is sent and the recipient can not be found in the local installation, hMailServer will normally try to connect to the recipients email server to deliver the email Thus, the mail is being rejected by the recipient's domain because the sender cannot be verified. Please advise Now the parts I don't agree with is about not ever checking email once the box is full (which happened to be a work email with very limited space). Can anyone elighten me ? Leave a Reply Click here to cancel reply.

  1. why?
  2. Check the SMTP Relayer setting.
  3. Why can't I just get them to leave me alone!
  4. He gets a bounce back that the user is unknown.
  5. Please contact your system administrator. " After sending successfully for the past few weeks, this just occurred today.
  6. I'm not sure what you'd expect could be done.

    25-Aug-2009 Reply Linda September 10, 2009 at 4:20 pm How do I resolve this problem?
  7. Pity the receiving mail server doesn't let you know.
  8. If you have entered localhost,,, or something similar in this textbox, this is likely the cause of the problem.

In Visual Basic, add vbNewLine or vbCRLF. I was both bounced and blocked and later found I had been permanently blocked and labeled as a spammer because of the word Viagra in the email and because my reply Everywhere they were explaining the error but no solution for it. Remote host said: 554 This server requires you to send from an IP address specified by the SPF for [email protected] With them you send an email like normal and their server strips out the large email attachment, your recipient gets sent a link from them including your original message, they Mxtoolbox If the IP address does not match the host name, hMailServer considers the email message to be spam. When I am attempting to receive mail adresses from database or ini file It's gives me the #5.1.1 error ie. Thank you in advance and kind regards!

All of a sudden, when I tried to reply to an email from her it was bounced back with a 550 5.1.1 user unknown message. Resolving the problem To resolve the issue, create an SPF for the sender's domain. Subject: RE: Event IDs Sent: 9/21/2011 4:49 PM The following recipient(s) cannot be reached: [email protected] 9/21/2011 4:50 PM The e-mail account does not exist at the Error messages not generated by hMailServer 550 Mailbox unavailable hMailServer never generates this error message.


This error message is issued if a client tries to authenticate using a method which is not supported by hMailServer. 504 Authentication type not specified. These are all saying pretty much the same thing. Spf Test In fact, there are so many ways email can fail, sometimes I'm amazed it works at all. Spf Record Spam prevention measures have made getting email delivered more difficult.

I simply use [email protected] and viola! weblink When a SMTPclient is delivering an email to a SMTPserver, it must specify both the sender and recipient before trying to submit the actual message content. Their mailbox is full and did not have room for your mail. The error I get is: Your message did not reach some or all of the intended recipients.

The error will always be reported if hMailServer can not determine the end recipient. The email address the client has given hMailServer may not be the end recipient. Usually there will be ju ERROR The requested URL could not be retrieved The following error was encountered while trying to retrieve the URL: Connection to failed. navigate here Reply connie July 2, 2012 at 8:41 am @Adrian Sounds like you have your SMTP settings wrong on your account.

If a SMTPclient tries to send an email message to a distribution list which is not enabled, this error message is given to the client. 550 Domain has been disabled. IT works fine for different domains, but it displays error as ‘Mailbox unavailable. Many thanks!

This error indicates a bug in the used SMTPclient. 530 SMTP authentication is required.

In the above case two mail servers from different providers are used. A couple of common reasons: You typed the email address wrong. It does this by sending the command HELO where is replaced with its host name. If this considered harmful by the ISPs?

I manage a number of on-line sites through 1and1, my personal domain is via 1and1 also. This is a problem at the recipient's side, and the message doesn't indicate what the problem is. If I remove .qmail-default from /home/email/[virtual_domain]/ folder email stops working. his comment is here You see, there's gold in that bounce message.

I'm confused and worried. It was a huge hassle and if he wasn't such a good friend I would have given up.