Outlook Error 550 5.7.1
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Core Operating System Division. Resolving SMTP error 550 5.7.1 Unable to relay for user@domain.com Error 0x800CCC79 ★★★★★★★★★★★★★★★ John Howard -MSFTOctober 11, 200515 Share 0 0 I was struggling with this error message today - everything I had found on the Internet suggested it related to security. Well, it does, of sorts, and a careful look at the configuration of your SMTP server without mis-interpreting a dialog box. If you open the properties for your SMTP server under IIS admin, select the Access Tab, and at the bottom, click "Relay", you will see a check-box at the bottom, which is by default selected, saying "Allow all computers which successfully authenticate to relay, regardless of the list https://social.technet.microsoft.com/Forums/en-US/1a84a06a-f1c8-40b4-ace8-1e264f218aa1/550-571-unable-to-relay-for?forum=exchangesvrsecuremessaginglegacy above". In my head-scratching to work out the cause of the error, I had mis-read the message as "Allow all users which succ….". The answer therefore was simple, above that check-box on the relay restrictions tab, there is a options dialog which by default Only the list may relay. Simple as adding your server to the list, or selecting All except the list below. The first one is obviously more secure.
Tags Exchange Network Infrastructure Systems https://blogs.technet.microsoft.com/jhoward/2005/10/11/resolving-smtp-error-550-5-7-1-unable-to-relay-for-userdomain-com-error-0x800ccc79/ Comments (15) Cancel reply Name * Email * Website Anonymous says: October 23, 2016 at 7:59 pm Dear John, Thanks for great tip! I got an other error code when trying to send email from Ubuntu server 12.04 by command lines: postfix/smtp[10700]: 0A083140089: to=, relay=mail.maildomain.com[]:25, delay=0.82, delays=0.08/0/0.63/0.1, dsn=5.7.1, status=bounced (host mail.mydomain.com[] said: 501 5.7.1 … Sender domain must exist (in reply to RCPT TO command)) All information of my email domain (mail.mydomain.com) and email server's IP are correct. Please help to suggest how to solve this error? Reply Anonymous says: October 23, 2016 at 7:59 pm Hello, I too faced SMTP error 550 5.7.1 couple of times but managed to overcome. However gone through an article which discuss about all possible 550 errors related to SMTP.. http://goo.gl/jNtfGI Reply Anonymous says: October 23, 2016 at 7:59 pm Hello, I have the same problem with a single domain name that my users and servers seem to be sharing: the inablility to send to a specific domain. We get 5.7.1. Unable to relay … or NDRs stating the address is unroutable. I have tried to telnet test to my servers and get 5.7.1. … I have tried the configuration described above with no luck. I know it's a valid email address as some of my people can email to the name from external accounts. Any ideas? Reply Chris Buechler says: October 14, 2005Email Hosting - Android Email Hosting - Blackberry Email Hosting - Exchange Email Hosting - iPhone / iPad Email Hosting - Other Email Clients Email Hosting - Other Mobile Device Email Hosting - Outlook Email https://support.smarsh.com/prinsite/my/c_helpfaq.aspx?pf=0&view=entry&s_faq_id=54 Hosting - POP/IMAP Email Hosting - Webmail Financial Visions General Glossary Instant Messaging Instant Messaging - IMProxy Instant Messaging - SmarshIM Message Search Reporting Smarsh Advantage Newsletters Smarsh Archiving Platform smarshCRM smarshDLP smarshEncrypt Social Media Archiving Spam Filtering Webinar Recordings Keywords: FAQ ID: Bloomberg Integrity Archiving How is Bloomberg Archiving Enabled? DVD Information DVD Data Extraction Guide Email Archiving How to Journal from Exchange 2003 How to Journal from Exchange outlook error 2007/2010 How to Journal from Exchange 2013 How to Journal from Google Apps How to Journal from Lotus Notes/Domino How to Journal from Office 365 Instructions to Archive Using Compliance BCC Option on Salesforce.com Email Hosting Disclaimer appears above message body when some users receive multi-part messages. Email Hosting Named Admin Policy FAQ Managing the size of your inbox What are the POP3 settings for 1stglobal01.smarsh.com? What are the POP3 settings outlook error 550 for as01.smarsh.com? What are the POP3 settings for cambridge.smarsh.com? What are the POP3 settings for dr01.smarsh.com? What are the POP3 settings for hbeck01.smarsh.com? What are the POP3 settings for hdvest.smarsh.com? What are the POP3 settings for lpl01.smarsh.com? What are the POP3 settings for luxor.smarsh.com? What are the POP3 settings for mail03.smarsh.com? What are the POP3 settings for mirage.smarsh.com? What are the POP3 settings for nfp01.smarsh.com? What are the POP3 settings for onesco.smarsh.com? What are the POP3 settings for popmail01.smarsh.com? What are the POP3 settings for popmail02.smarsh.com? What are the POP3 settings for smail01.smarsh.com? What are the POP3 settings for ti.smarsh.com? What are the POP3/IMAP settings for ameritas.smarsh.com? What should I set my SPF record to if Smarsh hosts my company's email? Which Email Hosting Setup Guide(s) Should I use? Email Hosting - Android Android Exchange Email Setup Video (SmarshConnect) Android IMAP Email Setup Video Android POP3 Email Setup Video How to set up Exchange email on an Android device (SmarshConnect) How to set up Exchange email on an Android device (SmarshMail)? How to set up IMAP email on an Android device How to set up POP3 email on an Android device. Email Hosting - Blackberry Blackberry (BIS) Email Polling Schedule Explained (Perceived "delay" of email) Blackberry POP3 Email Setup Blackberry Secret Menus