![]() ![]() If it is, you need to request removal from Spamhaus before you contact Yahoo. Yahoo uses Spamhaus, a public real-time blacklist. If it’s not, fix the original issue and take additional steps to get off the Yahoo blacklist. In many cases, the block on your mail address is removed in less than 48 hours. Always test your server and fix DNS issues before you send emails as they could be the reason why your emails are being rejected. Start by analyzing your mail servers to make sure your DNS settings are properly configured:ĭNS is one of the most critical elements in email marketing and delivery. If you performed a Yahoo blacklist check and found that your domain’s IP address was on the Yahoo blacklist, you have to fix the issue before you try to request removal. Once Google, Hotmail, or any other ISP flags your IP address, you’re more likely to have deliverability issues and difficulty reaching the inbox with another service provider. Your message wasn’t delivered because Yahoo was unable to verify that it came from a legitimate email sender.īlocklists intended to block spam can drastically affect your email marketing efforts. We recommend that you contact the recipient directly to confirm their correct email address.ĥ54 5.7.9 Message not accepted for policy reasons The Yahoo account that you’re trying to send to doesn’t exist. We ask that you review the email’s header and message content for potentially objectionable content.ĭelivery error: dd This user doesn’t have a account – .com Your emails have become deprioritized due to the message content triggering our filters. You can check your status on Spamhaus’ site The sending IP is listed on a Spamhaus blacklist. Review your mailing lists, and remove any addresses that generate bounces.ĥ53 5.7.1 Connections not accepted from IP addresses on Spamhaus PBL The senders MAIL FROM address has been sending to excessive bouncing accounts (non-active, don’t exist). Your mail server is configured as an open relay or proxy.Ĥ51 VS1-MF Excessive unknown recipients – possible Open Relay (#4.4.5) This error indicates that our servers were busy and temporarily unable to process your transaction at the time of connection.Ĥ51 VS1-IP Excessive unknown recipients – possible Open Relay (#4.1.8) We’re seeing a high volume of e-mails from your server that are indicative of unsolicited mailings.Ĥ51 Resources temporarily not available – Please try again later We’re seeing unusual traffic patterns from your server or your mailings are generating complaints from Yahoo Mail users.Ĥ21 4.7.1 Messages from x.x.x.x permanently deferred. We’re seeing unusual traffic patterns from your server. The message content contained objectionable content, we’re seeing unusual traffic from your servers, or emails from your mail server are generating complaints from Yahoo Mail users.Ĥ21 4.7.0 Messages from x.x.x.x temporarily deferred due to user complaints – 4.16.55 See Other Yahoo SMTP Error Codes SMTP ErrorĤ21 Message temporarily deferred – Or 553 5.7.1 Connections will not be accepted from 1.2.3.4, ![]() Typically, when Yahoo blocks your public IP address, you may receive a bounce message with the following error message: 421 4.7.0 Messages from temporarily deferred due to user complaints If Yahoo rejected your message, the results under “Delivered to:” will display as “Undelivered.” Yahoo Error Codes ![]() Simply look up the results for Yahoo emails and see if Yahoo blocked your domain. Run an email deliverability test with GlockApps to see if Yahoo’s blocking your emails. Unlike public IP blacklists, there is no way to quickly perform a Yahoo blacklist check. These are often junk accounts that receive tons of spam messages. Some users can just forward all of their emails to Yahoo. This problem is often seen with shared hosting servers. If you forward an email to a Yahoo address and you then mark it as spam, Yahoo will penalize your server. ![]()
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