Lokimalb
10-10-2023, 02:33 AM
Greetings! SMTP Error 554 5.7.1: What does it mean and what might be the best practices to prevent it from happening when sending emails? What are the main reasons that could lead to this error, and how can you avoid it in the future to ensure reliable mail delivery?
playat
12-10-2023, 01:36 PM
Hello! This error indicates that your email was rejected by the recipient's mail server due to policy or security reasons. The most common reasons include sending to an invalid or non-existent email address, being marked as spam, or exceeding the recipient's email size limit. To prevent this error, always double-check the recipient's email address for accuracy. Avoid sending large attachments that may result in size restrictions, and ensure your emails do not contain spam elements, see https://www.massmailsoftware.com/smtp/554-5-7-1/ 554 5.7.1 spam message rejected. Additionally, maintaining a good sender reputation by following email best practices such as using subscription lists and authenticating your emails with SPF and DKIM can go a long way in preventing SMTP errors and ensuring reliable mail delivery.