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Unknown Address Error 550 Unknown User

550 Use this forum if you have installed hMailServer and want to ask a question related to a production release of hMailServer. Before posting, please read the troubleshooting guide. A large part of all reported issues are already unknown address error 550-'#5.1.0 address rejected described in detail here. Post Reply Print view Search Advanced search 7 posts • smtp 550 #5.1.0 address rejected Page 1 of 1 weinberk Normal user Posts: 64 Joined: 2009-01-24 00:17 Help please - 5.1.0 - Unknown address error 550 5.1.0 - unknown address error Quote Postby weinberk » 2009-02-25 17:00 Hello-I'm getting reports that when outside senders try to email our users, the >>sometimes<< get a bounce, with a message like this:From: "Mail Delivery System" Date: 25 Feb 2009 550 #5.1.0 address rejected. (in reply to rcpt to command) 14:50:13 To: Subject: Delivery Status Notification (Failure)The following message to was undeliverable.The reason for the problem:5.1.0 - Unknown address error 550-'Unknown user'there's also an attachment that shows:Reporting-MTA: dns; theirsmtpserverFinal-Recipient: rfc822;myuser@mydomainAction: failedStatus: 5.0.0 (permanent failure)Remote-MTA: dns; [myipaddress]Diagnostic-Code: smtp; 5.1.0 - Unknown address error 550-'Unknown user' (delivery attempts: 0)Any ideas? I'm confused by the "delivery attempts: 0" Top ^DooM^ Site Admin Posts: 13862 Joined: 2005-07-29 16:18 Location: UK Re: Help please -

Server Error 550 5.1 0 Address Rejected

5.1.0 - Unknown address error 550 Quote Postby ^DooM^ » 2009-02-25 18:12 If their server is saying the user is unknown then the user is unknown. Enable SMTP Logging, replicate the issue and post the portion of the log that shows the unknown user bounce. If at first you don't succeed, bomb disposal probably isn't for you! ヅ Top weinberk Normal user Posts: 64 Joined: 2009-01-24 00:17 Re: Help please - 5.1.0 - Unknown address error 550 Quote Postby weinberk » 2009-02-25 18:16 ^DooM^ wrote:If their server is saying the user is unknown then the user is unknown. Enable SMTP Logging, replicate the issue and post the portion of the log that shows the unknown user bounce.Thanks for the quick reply!Any idea what the "delivery attempts 0" part is? The user definitely exists. Other mail works fine for her. it's sporatic from some. Top ^DooM^ Site Admin Posts: 13862 Joined: 2005-07-29 16:18 Location: UK Re: Help please - 5.1.0 - Unknown address error 550 Quote Postby ^DooM^ » 2009-02-25 18:17 Without looking at the log i cannot tell you anything that wasn't a pure guess. If at first you don't succeed, bomb disposal probably isn't for you! ヅ Top rekabis New user Posts: 25 Joined: 2007-02-25 11:34 Location: K

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Remote Host Said: 550 #5.1.0 Address Rejected

Product Guides Dedicated Hosting Reseller Hosting KnowledgeBase Website Email Domain Names Reseller Billing 550 5.1.1 recipient address rejected user unknown in relay recipient table Community Support Browse Questions Ask a Question User Submitted Articles Education Channels Android BoldGrid cPanel DokuWiki Drupal 7 Drupal what does 550 #5.1.0 address rejected mean 8 Everything Email Joomla 2.5 Joomla 3.1 K2 Magento 1.6 Mambo MediaWiki Moodle Movable Type OpenCart OpenCart 2.0 osCommerce PHP-Fusion PHP-Nuke phpBB phpList Premium Website Builder PrestaShop 1.5 PrestaShop 1.6 SMF Tiki https://www.hmailserver.com/forum/viewtopic.php?t=14238 Wiki VirtueMart 3 Web Hosting Manager Website Design WordPress Tools & Resources Email Configuration Blacklist Check Visual DNS Lookup Quick Tagger Icon Sets Favicon Generator Bounce Back Parser What is my IP address? >>Email Blackberry (1)Bounceback Errors (18)Email Client Setup (14)Email Troubleshooting (22)Exim (8)Fighting Spam (23)Horde Webmail (18)How To and General Information (18)ipad (1) iPhone (3)Mac Mail (7)Mailing Lists (9)Outlook (17)Outlook 2010 (2)RoundCube Webmail http://www.inmotionhosting.com/support/email/bounceback-errors/email-error-550 (15)Sending Email From a Webpage (5)SquirrelMail Webmail (23)Thunderbird (8)Webmail (2) >>Bounceback Errors Fixing the 550 No Such User Here email error (116,436 hits)Email error 552 (60,689 hits)Why does Email bounce, bounceback, or error? (49,175 hits)Email Error- Mailbox Quota Exceeded (38,382 hits)"550 Invalid address" email error (19,673 hits) Email error 554 (107,500 hits)What to do if an email is returned? (56,398 hits)Email error 550 (44,756 hits)Email error 450 (31,893 hits)Domain example.com has exceeded the max emails per hour (15,150 hits) Mail delivery failed: returning message to sender (78,563 hits)Email error 421 (49,683 hits)Email error 553 (39,583 hits)Email Bounce- Retry timeout exceeded (28,276 hits)535 incorrect authentication (13,060 hits) >>Email error 550 Email error 550 Written by Jacob Nicholson Views: 44,756 Published: May 2, 2016 Comments: 1 A 550 email erroris generally encountered when the recipient's mailbox is unavailable due to being incorrectly typed or not found. You should receive a bounce-back message from the server with a variation ofemail error 550 in the subject, and the body should contain your original message that you attempted to deliver. Example bounce-back message Delivery-date: Thu, 25 Oct 2012 14:49:59 -0700Received: from mailnull by biz24.inmotionhosting.com wit

Neal (Exclaimer) Sales & Marketing Manager GROUP SPONSORED BY EXCLAIMER TECHNOLOGY IN THIS DISCUSSION Microsoft 494242 Followers Follow Microsoft Exchange Server 2010 https://community.spiceworks.com/topic/297095-550-5-1-1-user-unknown-when-sending-from-external-email-server Apple Mail Join the Community! Creating your account only takes a few minutes. Join Now Delivery to the following recipient failed permanently:     recipient name@domain.co.uk Technical details of permanent failure: Google tried to deliver your message, but it was rejected by the server for the recipient domain [domain name]by[exchange server dns name] [external ip]. The error that the other server returned address rejected was: 550 5.1.1 User unknown Reply Subscribe RELATED TOPICS: 550 5.1.1 User unknown when sending from external email server How many non-I.T. people do you know that have an email server in their home? external email is down   1 2 Next ► 32 Replies Jalapeno OP Chris Francis Jan 30, 2013 at 12:36 UTC I have googled this error 0 address rejected and checked that "require that all senders are authenticated" is unticked in the mailbox Message Delivery Restrictions. checked the email address in the mailbox email addresses tab - its ok I added a new email address to this tab and was able to send to this new address ok. Deleted and readded the email address which is the primary one and tried sending again - same error from hotmail or Gmail. Receiving internal email ok. All other users are receiving external email ok. Chris 0 Mace OP Jay6111 Jan 30, 2013 at 12:55 UTC Confused! You're trying to send from gmail to an address internal to your organization correct and it's getting bounced back? -Jay 1 Jalapeno OP Chris Francis Jan 30, 2013 at 5:18 UTC Hey, Hello again Jay. If send to one particular email address in my organisation from an outside source like gmail, hotmail, etc then the sender gets the bounceback error. 0 Mace OP Jay6111 Jan 30, 2013 at 5:26 UTC OK, one user, and this is Exchange 2007 correct? Going off of 2010

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