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Smtp Unknown Address Error 550

550 Use this forum if you have installed hMailServer and want to ask a question related to a production release unknown address error 550-'#5.1.0 address rejected of hMailServer. Before posting, please read the troubleshooting guide. A large smtp error codes part of all reported issues are already described in detail here. Post Reply Print view Search 5.1.0 - unknown address error Advanced search 7 posts • Page 1 of 1 weinberk Normal user Posts: 64 Joined: 2009-01-24 00:17 Help please - 5.1.0 - Unknown address error 550

Smtp 550 #5.1.0 Address Rejected

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 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 5.1 1 user unknown - 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 - 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

Storage Video Quizzes Follow us on Twitter Follow us on Facebook Subscribe To Rss Feed Understanding Email Bounce Messages Home » Networking » Understanding Email Bounce 550 5.1.1 recipient address rejected Messages Posted By Gabriel Torres on May 20, 2013 in Networking

550 5.1.1 Recipient Address Rejected: User Unknown

Invalid Email AccountIf you get error 550 (or 554, depending on the recipient’s email server), it

550 5.1.1 Recipient Address Rejected User Unknown In Relay Recipient Table

means that the email address you are sending the message to does not exist. Example of messages associated with this error: 550 [email] User unknown 550 Sorry, no https://www.hmailserver.com/forum/viewtopic.php?t=14238 mailbox here by that name. (#5.1.1) 550 Requested action not taken: mailbox unavailable 550 5.1.1 [email] is not a valid mailbox 550 No Such User Here 550 Invalid recipient [email] (user not found) 5.1.0 - Unknown address error 550-‘MAILBOX NOT FOUND' 550-5.1.1 The email account that you tried to reach does not exist. 550 5.1.1 http://www.hardwaresecrets.com/understanding-email-bounce-messages/2/ [e-mail]: Recipient address rejected: User unknown in relay recipient table 554 delivery error: This user doesn't have a [name of the service] account 554 delivery error: Sorry your message to [email] cannot be delivered. This account has been disabled or discontinued 550 #5.1.0 Address rejected [email] A message that is related to the same problem we are describing is this one, where the recipient’s host (i.e., email server) doesn’t exist: Sorry, I couldn't find any host named [host]. (#5.1.2) If you got the email address from a real person, most likely there is a typo somewhere. Double check the email address you typed. If you obtained the address by phone, you may have misheard the name or a letter and ended up writing down the wrong email address. However, if you obtained the recipient’s email from a website, from a magazine, an advertisement, etcetera, and you double-checked it to make sure there is no typo, this means that the email simply doesn’t exi

553, or relay-prohibited error when sending e-mail messages Applies To: Outlook 2007 More... Less Symptom When you are away from home and send an e-mail message using your home e-mail account, your e-mail message might be returned with a 550, 553, or https://support.office.com/en-us/article/I-receive-a-550-553-or-relay-prohibited-error-when-sending-e-mail-messages-65b494a4-0a15-433e-829f-e73651e0245e relay-prohibited error message. The same situation could occur when you are away from your office and try to send an e-mail message using your work e-mail account. Summary Relaying occurs when an e-mail message is sent to an e-mail address whose domain (the name after the @ symbol, such as adatum.com) is not processed by the Simple Mail Transfer Protocol (SMTP) or outgoing server that the sender is requesting to deliver the address rejected message. The SMTP server must connect to another SMTP server to relay the message. When you send an e-mail message that encounters a relay error, your SMTP (outgoing) e-mail server might return your e-mail message with an error message such as one of the following: The message could not be sent because one of the recipients was rejected by the server. The rejected e-mail address was ''. Subject: '', Account: '', Server: '', unknown address error Protocol: SMTP, Server Response: '550 ... Relaying Denied', Port: 25, Secure (SSL): No, Server Error: 550, Error Number: 0x800CCC79. "The message could not be sent because one of the recipients was rejected by the server. The rejected e-mail address was ''. Subject '', Account: '', Server: '', Protocol: SMTP, Server Response: '553 sorry, that domain isn't in my list of allowed rcpthosts (#5.7.1)', Port: 25, Secure(SSL): No, Server Error: 553, Error Number: 0x800CCC79. The exact error message might vary, depending on your Internet service provider (ISP). Some ISPs might not return an error message when they detect outgoing messages as unsolicited commercial e-mail. In such cases, your message might appear to be sent normally — it leaves the Outlook Outbox and appears in Sent Items — but it is never actually delivered to the recipient. Your message was rejected because the SMTP (outgoing) e-mail server did not recognize you as an authorized user. SMTP is the protocol — standards that computers use to communicate with each other — that most e-mail servers use to send e-mail messages across the Internet. When you use an e-mail program, such as Outlook, that lets you store your e-mail messages on your computer, you need access to an SMTP server to send e-mail messages. Note: Web e-mail systems similar to Windows Live Mail and Y

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