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  2. List of SMTP server return codes - Wikipedia

    en.wikipedia.org/wiki/List_of_SMTP_server_return...

    X.2.XXX Mailbox Status. X.3.XXX Mail System Status. X.4.XXX Network and Routing Status. X.5.XXX Mail Delivery Protocol Status. X.6.XXX Message Content or Media Status. X.7.XXX Security or Policy Status. The meaning of the "detail" field depends on the class and the subject, and are listed in RFC 3463 and RFC 5248 .

  3. List of HTTP status codes - Wikipedia

    en.wikipedia.org/wiki/List_of_HTTP_status_codes

    As the HTTP/1.0 standard did not define any 1xx status codes, servers must not send a 1xx response to an HTTP/1.0 compliant client except under experimental conditions. 100 Continue The server has received the request headers and the client should proceed to send the request body (in the case of a request for which a body needs to be sent; for ...

  4. List of SIP response codes - Wikipedia

    en.wikipedia.org/wiki/List_of_SIP_response_codes

    Extended search being performed may take a significant time so a forking proxy must send a 100 Trying response. [1] : §21.1.1. 180 Ringing. Destination user agent received INVITE, and is alerting user of call. [1] : §21.1.2. 181 Call is Being Forwarded. Servers can optionally send this response to indicate a call is being forwarded. [1 ...

  5. Mean corpuscular hemoglobin (MCH) refers to the amount of hemoglobin in a red blood cell. High or low numbers may indicate a vitamin deficiency or certain types of anemia. An MCH value refers to ...

  6. Apathy describes an absence of feeling or emotion. This indifference can affect your motivation and leave you feeling detached from the world. You might: stop caring about everyday tasks, hobbies ...

  7. Leukocytes in Urine: What You Should Know - Healthline

    www.healthline.com/health/leukocytes-in-urine

    High leukocyte levels in urine could be a sign of: a urinary tract infection (UTI) a kidney infection or kidney stones. an obstruction in the urinary tract or bladder. a tumor in the pelvic area ...

  8. AOL latest headlines, entertainment, sports, articles for business, health and world news.

  9. Ten Symptoms of Heart Failure Getting Worse - Healthline

    www.healthline.com/health/heart-failure/symptoms...

    increased shortness of breath. swelling in the ankles, legs, abdomen, or other parts of your body. fatigue. chest discomfort. sudden weight gain. reduced exercise tolerance. persistent cough or ...