Home > Error 550 > Error 550 5.1

Error 550 5.1

Notice the "Sender Address Rejected"; this means that the problem is actually with the Sender's email address - specifically, that the domain used in the sender's email address was not a This IP is listed on the Exploits Block List (XBL). Such an NDR is useless rubbish because it creates the false impression that you did something wrong. If you do not have other means to contact the person who is bouncing mail, you probably have a dead email address.

Run an anti-malware scan on your computer. Spiceworks Originals We have some things for you to check out and tell us about. © Copyright 2006-2016 Spiceworks Inc. Identifying a Star Trek TNG episode by text passage occuring in Carbon Based Lifeforms song "Neurotransmitter" Why use a Zener in a regulator as opposed to a regular diode? Choose Settings > Display settings > Outlook Web App version, select Use the light version of Outlook Web App, and then choose OK. https://support.office.com/en-us/article/Fix-email-delivery-issues-for-error-code-5-1-1-through-5-1-20-in-Office-365-79e91ade-5c83-405b-a37d-d99c7d069b13

You should try to reduce the size of the message, or try to split the email into smaller parts and resend it. Could you turn on SMTP logging and do a telnet to the server and see how the session looks 0 Jalapeno OP Chris Francis Jan 31, 2013 at Check if there’s a current service issue in Office 365 affecting the user's account.

IB607 This IP address has reached the maximum allowed recipients for that hour. Another reason for receiving this error is the possibility that a domain has recently changed hosts, and while the change has taken place, the new domain record has not yet propagated The recipient needs to clear out the receiving folder to make room for more email. Remove a single recipient Choose New mail.

If you feel this message has been flagged as spam erroneously, please be sure to obtain a copy of the original message attempting to be sent, and then contact support. Send No thanks Thank you for your feedback! × English (United States)‎ Contact Us Privacy & Cookies Terms of use & sale Trademarks Accessibility Legal © 2016 Microsoft current community blog Why did I get a non-delivery report? http://serverfault.com/questions/457612/email-bounce-back-550-5-1-1-recipient-rejected Domain Error Messages Connection timed out / Connection Refused Domain not found Anti-Spam Error Messages Stop Spamming/We Hate Spammers!

It might also be a problem with the recipient’s domain configuration. of Community Action: Before and AfterSentry International: Before and After Contact Our Design Staff Mobile Web SitesWebsite HostingSearch Engine Optimization (SEO)Content Management Systems (CMS)Social MediaPay-Per-Click (PPC)Email Services Anti-Virus ScanningAdvanced Spam FilteringRelay This IP address has been blocked from our internal RBL. Since then emails from my company to any email address at their company bounce back from the System Administrator with this error: Your message did not reach some or all of

I've seen similar errors (although User Unknown errors) where the sender had stale DNS records and was attempting to resolve their MX to an IP that no longer hosted it. The system returned: (22) Invalid argument The remote host or network may be down. You are reading this because you’ve received an automated message with a “550 5.1.1” error code in it. For example, it might be pointing to a mail server that isn't valid.

For example, the recipient might have been moved from an on-premises Exchange organization to Exchange Online, or vice-versa. Use the Down Arrow and Up Arrow keys to select the recipient, and then press the Delete key. Here's what backscatter is: Spammers often falsify the From address of spam by using email addresses they’ve collected from the Internet instead of their own address. Generated Mon, 10 Oct 2016 04:33:41 GMT by s_ac15 (squid/3.5.20) {{offlineMessage}} Store Store home Devices Microsoft Surface PCs & tablets Xbox Virtual reality Accessories Windows phone Software Office Windows Additional software

Return to top Anti-Spam Error Messages System administrators frequently set up their systems to refuse mail from spammers, but since no spam filtering system is perfect, your message may have been Top of page I'm the email admin. Check with your domain registrar or DNS hosting service to verify the MX record for your domain is correct. Thanks Chris 0 Jalapeno OP Chris Francis Jan 31, 2013 at 11:45 UTC ECB-PsyWulf This is the latest bounceback received as of this morning.

Which version do I have? If you feel this message has been flagged as spam erroneously, please be sure to obtain a copy of the original message attempting to be sent, and then contact support. 552 Bad entries in the auto-complete list The user could have selected an entry that isn't valid from your auto-complete list, also known as the nickname cache.

In the E-Mail Name Resolution section, choose Clear Most Recent Recipients List, and then choose OK.

Please check the content of your message and try again later. 554 This IP has been temporarily blocked for attempting to mail too many invalid recipients. The recipient's email address has been misspelledOr the recipient's email provider has blocked sending from this address. Common Bouncebacks with Email Bounceback Error Cause of Error Resolution 421 Server temporarily unavailable. There is something wrong with the configuration of the receiving server.

The mail server that generated the NDR 5.1.0 error won't accept messages from the sender or for the recipient. you can't send out mail that uses your Pen Publishing address as the From: header via their mail servers). There are two other anti-spam error messages that are very, very similar to some of the domain errors shown above. This list is also known as the nickname cache.

Please try again later. 550 This message has exceeded the max number of messages per session. The following are all examples of User Unknown messages: : host host.example.com said: 550 ... Problems with the Recipient’s Email Server Related ArticlesTesting the Security of Your Website – Part 2Testing the Security of Your Website – Part 1Testing the Security of Your Website – Part It’s annoying, but if it’s backscatter, your account hasn't been hijacked.

Please check your recipient list and try again later. 550 This IP has sent too many messages this hour. Please provide a valid From. IB705 The email message containing a link, attachment, or pattern caught by our filters as a possible virus. Check your Sent folder for messages that you know you didn’t send.

This type of useless automated message is called backscatter. There are couple of things that could have caused this error: The recipient address does not exist: you may possess an outdated email that was valid at one time. This could be due to the server receiving more mail then it is used to, a external attack on a domain (such as a mailbomb) or an internal setup problem, causing Why don't you connect unused hot and neutral wires to "complete the circuit"?