Error 554 5.7
Now My Account English Deutsch Espanol Francais Русский Українська Italiano Magyar Polski Portugues Brasil Svenska Turk Latin America Products Bulk Mailers Atomic Email Studio Atomic Mail Sender Email Extractors Atomic Email Extractor Atomic Lead Extractor Atomic Email Logger Atomic Web Spider Atomic WHOIS Explorer Atomic Newsgroup Extractor List Managers Atomic Email Verifier Atomic List Manager Atomic Subscription Manager Databases Atomic Web Catalogue Services Bulk Mailers Bulk SMS Sender Bulk Email Service SMTP Service For Mailing Lists Atomic Email Tracker Atomic Verifier Online Extras Custom Template Prices Benefits Features Knowledgebase Support Ask a question Video demo About us Our Company Contact us Our Benefits Success Stories Testimonials Blog Home SMTP for Atomic Email Marketing Software The 554 5.7.1 SMTP error Note: SMTP error codes are not an exact science, because different servers can assign different meanings to the same error code. However, there are things that are likely to be true, and we are going to talk about them. Well, you’ve received this nasty “554 5.7.1” SMTP error message—maybe even more than one. Why did it happen? Let’s talk about it. The most likely reason for this error is that recipients’ spam filters didn’t let your message through. There are a couple of things that might have led them to reject your message: Your IP address (the one associated with the domain name and email address itself) has been added to a blacklist commonly available somewhere, which is used by spam filters when they check incoming emails. There are online resources that allow you to check if an IP address is on a specific blacklist (we will talk about that later on). Your IP address has been added to a recipient’s private blacklist, which isn’t publicly available; in this case, it’s much harder to find out whether this is what happened. Causes of a 554 5.7.1 SMTP error Now, your IP doesn’t get added to a blacklist just for
new Firefox» Yahoo Help 👤 Sign in ✉ Mail ⚙ Help Account Info Help Suggestions Help Central» Article Error: "554 5.7.9: Message not accepted for policy reasons" when sending email to Yahoo If your emails aren't being received by Yahoo accounts, it's a good idea to review our Yahoo Mail deliverability FAQ to make sure you're following industry standards for bulk email senders. Why you're seeing this error Your message wasn't delivered because Yahoo was unable to verify that it came from https://www.massmailsoftware.com/smtp/554-5-7-1.php a legitimate email sender. Your email failed one or more authentication checks that Yahoo uses to verify emails are truly sent from the domains they claim to originate from. Follow industry standards What you can do In almost all cases, we recommend you switch to sending mail from your https://help.yahoo.com/kb/SLN7253.html own domain. For mailing lists, also known as "listservs," you should change your sending behavior by adding the mailing lists’ address to the "From:" line, rather than the sender’s address. Also, enter the actual user/sender address into the "Reply-To:" line. You can also change your email client's "send as" settings to use Yahoo SMTP servers. Consult with your third-party email client's help pages, or FAQs, for information on how to change these settings. It's a good idea to review our guide to bulk email industry standards and best practices. Email authentication methods These standards are designed to eliminate an email user’s exposure to potentially fraudulent and harmful messages and have been adopted by all major email providers and many technology companies. DKIM (Domain-Keys Identified Mail) SPF (Sender Policy Framework) DMARC (Domain-based Message Authentication, Reporting and Conformance) Our DMARC policy proactively protects our users from em
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view Printable view Export to Adobe Acrobat (PDF) Export to Microsoft Word Email this page Other pagesHome page Dashboard News Recent updates RSS feed builder Index Site map Labels Attachments index People Directory AccountLog in History History 554 5.7.1 Delivery not authorized Question I tried to send MIT email and got an email error "554 5.7.1", what does it mean? 554 5.7.1 Delivery not authorized 554 5.7.1 You are not allowed to connect Answer It probably means that MIT's spam filter blocked the mail. Knowing why the mail was blocked is harder - our spam filter (Symantec Brightmail) can block various messages for various reasons. Symantec's official answer to the topic is here: http://www.symantec.com/docs/TECH169847 - Message Rejected with SMTP Code 554. 5.7.1 MIT-specific answer While Symantec's official answer gives a few bullet points for people to work through, we will comment that the most common situations encountered by IS&T Customer Support are: problems with the sender's reputation problems with the sender's DNS. Sender's Reputation When a sending site connects to MIT to submit mail, MIT's spam filter does some lookups based on the IP address of the connecting site. If the spam filter determines that the sender's IP address has a "negative reputation", it will reject the mail with a 554 5.7.1 error. To investigate problems with the sender's reputation, consult http://ipremoval.sms.symantec.com/lookup/ Sender's DNS In addition to considering the reputation of the sender's IP address, MIT's spam filter also checks to see if the sender has configured reverse DNS for their IP address. Loosely speaking, MIT requires that the sender have a properly-configured hostname, and treats them as a spammer if they do not. The message "Delivery not authorized" could happen for multiple reasons: no reverse DNS record exists for the connecting IP address the reverse DNS record exists for the connecting IP address, but the 'A' or 'AAAA' record of the resulting domain does not match the connecting IP address the domain provided at HELO and EHLO has neither an 'A', nor an 'AAAA', nor an 'MX' record in DNS Here are some