Error Message 550 5.7.1
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was sent from a server or domain that is currently listed as a high volume spam source by a reputable global black list. How can I unblock my account as an end user? Encourage your service provider to ensure the server you use for email sending has been secured against outgoing spam and compromised email accounts. This problem may also occur if the owner of your domain name has been using the domain for spamming or fraudulent purposes. Check the IP address or domain listed in the error message https://social.technet.microsoft.com/Forums/en-US/1a84a06a-f1c8-40b4-ace8-1e264f218aa1/550-571-unable-to-relay-for?forum=exchangesvrsecuremessaginglegacy against reputable RBLs including Spamhaus. An excellent RBL checking tool is available at www.mxtoolbox.com. Find out if your domain has been listed by Spamhaus using the "Domain Lookup Tool" in the URL listed below. If the domain is listed, request delisting the domain. https://www.spamhaus.org/lookup/ Secure your account against compromise by performing the following: Change your password. Ensure your new password has a minimum length of https://mailchannels.zendesk.com/hc/en-us/articles/202191674-Fixing-the-550-5-7-1-RBL-Sender-blocked-IP-or-domain-error eight characters and uses a mixture of upper and lower case letters, numbers, and special characters. Verify that your operating system is running with the latest security updates. Update your anti-virus software and conduct a full scan of your system to ensure that a spammer has not installed spam-sending malware on your computer. If these steps do not resolve the problem, please file a support request with your web hosting provider. How can I unblock an end user account as a service provider? Perform all the actions recommended above. If you are still unable to send email, please raise a support ticket by writing to support@mailchannels.com with the following details 1) Sender email address 2) Subject 3) Recipient email address 4) Date & Time Facebook Twitter LinkedIn Google+ Was this article helpful? 1 out of 1 found this helpful Have more questions? Submit a request Comments Please sign in to leave a comment. Related articles Fixing the 550 5.7.1 [ESA] sender blocked error Fixing the 550 5.7.1 [CS] Message blocked. error Unblocking senders Fixing the 550 5.7.1 [BFD] error How to enable compromised account notifications © MailChannels Corporation. Powered by Zendesk
Mailbox Recovery, Exchange Server Recovery No Comments While working on Exchange Server with MS Outlook, the users often bump across the following error message when they try to send emails outside their domain: “550 5.7.1 Unable to Relay” Cause: http://www.stellarservertools.com/blog/exchange-error-550-unable-to-relay/ Error 550 occurs when emails are sent to a domain other than the user's. This error signifies that the outgoing mail server fails to recognize the sender. This means that the users are not authenticating to the server and hence, they are not allowed to send emails. The second possible reason could be the absence of the recipient policy for that domain in the user's error message department. Exchange Database (EDB) corruption is another factor that generates the above error. Resolution: The aforementioned error message can be resolved by these solutions: Solution1: Go to the Administrative Groups in the Exchange Server Manager. Select Administrative Group Name -> Server -> Server Name -> Protocols -> SMTP. Choose Properties option by right clicking on Default SMTP Virtual Server. Choose Access tab and click on Relay error message 550 to select ‘only the list below‘. Now, add the IPs you want to relay and your domain. Finally check ‘Allow all computers which successfully authenticate to relay, regardless of the list above‘. Solution2: You can also figure out the various Exchange Server errors you encounter in the application event log and look for their resolve on-line. If the Exchange Error 550 is due to the result of database corruption, it can be repaired using Microsoft inbuilt utility Eseutil. In case after using the ESEUTIL utility the database is not repaired due to severe corruption then you need to devoir a third party Exchange Server Database recovery tool. Among the copious EDB repair tools available in the market, a reliable solution is “Stellar Phoenix Mailbox Exchange Server Recovery”. This powerful software is able to recover all the data from the corrupt EDB file in 3 simple steps: Select the EDB file that you want to repair. Scan- Run the Quick/Extensive Scan to scan the user mailboxes and their items. Recover- Once you have selected the desired items for recovery, you can save the recovered files at a specified location. Stellar Phoenix Mailbox Exchange Recovery software is d