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Learn the meaning and usage of HTTP response status codes, which indicate the server's response to a client's request. The codes are classified into five categories: 1xx, 2xx, 3xx, 4xx, and 5xx.
SMTP server return code 250 means requested mail action okay, completed. It is a positive completion reply that indicates the server has accepted and delivered the message to the recipient. See the list of other SMTP status codes and their meanings on Wikipedia.
If you have problems sending AOL Mail, you may need to restart your computer, update your browser, disable pop-up blocker, or reset your firewall. Learn how to fix common sending errors, image challenges, and missing images in this article.
Learn how to fix Temporary Error 20 in AOL Mail, which occurs when you access your account from multiple devices or browsers simultaneously. Find out the possible ...
HTTP 502 is an error code that indicates a problem with the communication between a proxy or gateway server and an upstream server. Learn the specification ...
HTTP 402 is a non-standard response code that indicates the client must make a payment to access the requested resource. It is used in e-commerce, subscription-based systems, and paywalls, and is accompanied by an entity body with payment details.
HTTP 302 Found is a common way of performing URL redirection, inviting the user agent to make a second request to the new URL specified in the header field Location. Learn the history, usage and examples of this status code, and how it differs from 303 and 307.
HTTP 301 is used to indicate that a resource has been moved permanently to a new URL. Learn how to implement, cache, and handle 301 redirects, and how they affect SEO and browsers.