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Email Error 550 5.1.1

Consult the webmaster if you see any errors in the resulting list. Their rule could have tried to send a copy of your message to a bad email address. to Exchange servers, will end up seeing this error in the bounce message: 550 5.1.1 User unknown (in reply to RCPT TO command) Read: How to fix error “550-Please turn on SMTP If you receive this error, try resending your message twenty-four hours later. http://dssoundware.com/email-error/email-error.php

At one point when this happened, I deleted the affected site and associated users and domains (DNS records included) from the ISPConfig control panel, emptied the recycle bin, and recreated them. I'm using a desktop version of Outlook 2007 and connecting through my ISP. Choose Options > Messaging. It's the IP for the server hosting company's DNS server, and it is the correct IP for this.

Subject: Email Solution Sent: 12/12/2012 11:08 AM The following recipient(s) cannot be reached: '[email protected]' on 12/12/2012 11:08 AM 550 5.1.1 recipient rejected Looking in the Message Options of the bounce The auto-complete list is a list of suggested names that shows up in your email program when it finds a name that matches what you have typed on the To line. Perform DNS lookup for your domain (DNS Lookup) and push the "Find problems" button.

What I can tell you, is that it contains the following (company.tld is my company domain, customer.tld is the domain of the customer having this problem currently); apollo:~# cat /etc/postfix/local-host-names | When a mail server receives an email for one of its users, the server checks to ensure that the sender's domain is a real domain - if the domain name does Creating your account only takes a few minutes. Chat with UsContact Us Facebook Twitter Google LinkedIn © Bobcares.

Check the email address for any errors.If you are using AOL, check out how to unblock emails.If you are sending to a group, you must reach out to each address individually, Solution: Examining the error logs and email headers of the bounced mail would help identify the issue with the mail server. Top of page Why you got a non-delivery report with error code 5.1.x    The notification message, also called a non-delivery report (NDR), that you get in your email inbox about this https://www.massmailsoftware.com/smtp/550-5-1-1.php Home 550 5.1.1 User unknown when sending from external email server by Chris Francis on Jan 30, 2013 at 12:30 UTC | Microsoft Exchange 0Spice Down Next: Exchange 2010 external autodiscover

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 Apologies if I've missed a thread on this, and please feel free to point me in the direction of it if one exists. It is quite rare, actually, to reach a completely incorrect mail server when sending email to a domain, so if you receive this message, the problem is usually a misconfiguration error I don't see how, but could this be something to do with the problem ?

The mail exchange (MX) resource record for your domain might be incorrect. Stay logged in Sign up now! I’m not going to try again; this message has been in the queue too long. Check to see if the IP is listed on the Spamhaus Block List. 554 Connection refused.

The only thing I didn't enable was disk quota's. http://dssoundware.com/email-error/email-error-4-7-1.php How you can fix the 550 5.1.1 error Check the email for typos (sometimes they are quite obvious, for example: [email protected]) and verify it. The following are all examples of User Unknown messages: : host host.example.com said: 550 ... For more information, see Create DNS records at any DNS hosting provider for Office 365 and Customize an SPF record to validate outbound email sent from your domain..

asked 3 years ago viewed 95868 times active 11 months ago Linked -1 recipient rejected in a SMTP connection from a OpenVz container Related 3Exchange bouncing email sent by Outlook1Outlook 2007/2010 Sign Up: Related posts: How to fix ‘550 5.1.1 : Recipient address rejected' error in Exchange and Postfix servers The curious case of Google tagging all mails as spam How to The error that the other server returned 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. http://dssoundware.com/email-error/email-error-552-5-3-4.php How can I have low-level 5e necromancer NPCs controlling many, many undead in this converted adventure? 2048-like array shift Is the NHS wrong about passwords?

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and this post by Chris  "DOH! This IP is listed on the Policy Block List (PBL). TALK TO AN EXPERT NOW! exchange outlook share|improve this question asked Dec 12 '12 at 22:45 Stan 41112 1 Of course you're not being blocked because the NDR states "recipient rejected", not "sender rejected".

To fix this problem, follow the steps in the next section to remove entries that aren't valid from the auto-complete list. if I've been completely incompetent and screwed something up ). Required fields are marked *Comment * Name * Email * CAPTCHA Code* Get the best web hosting and server administration information in the industry right in your inbox. http://dssoundware.com/email-error/email-error-5-1-0.php Where, 5.1.1 means "user doesn't exist" and 5.7.1 means "I don't want your junk, go away". –Michael Hampton♦ May 14 '13 at 13:49 1 You make me very happy that

myhostname = apollo.domain.tld alias_maps = hash:/etc/aliases alias_database = hash:/etc/aliases myorigin = /etc/mailname #mydestination = apollo.domain.tld, localhost.domain.tld, localhost.localdomain, localhost relayhost = mynetworks = mailbox_command = procmail -a "$EXTENSION" mailbox_size_limit = 0 In the Send Messages section, choose Empty Auto-Complete List, and then choose Yes. IB504 This IP address has reached the maximum allowed messages for that hour. Solution 1: Check the Office 365 Message Center for configuration problems or service-wide issues    For Office 365 accounts, the Office 365 portal provides a central source for a variety of tools,