POP, SMTP, IMAP servers
Enter yourDomain Nameto query the POP, SMTP, IMAP server address. Website:The hyperlink login is visible., as shown in the figure below:
smtp.qiye.163.comis a general-purpose SMTP server;fastsmtp.qiye.163.comIt is a fast track optimized for high-frequency, automated transmission, and is more suitable for system integration. Both have similar functions, but the latter has advantages in performance and stability, especially for program calls.
Configuration:
Types of agreements | Server address | Default port | Encrypted Port (SSL) | POP | pop.qiye.163.com | 110 | 995 | SMTP | smtp.qiye.163.com | 25 | 465 | IMAP | imap.qiye.163.com | 143 | 993 |
Types of agreements | Server address | Default port | Encrypted Port (SSL) | POP | pophz.qiye.163.com | 110 | 995 | SMTP | smtphz.qiye.163.com | 25 | 465 | IMAP | imaphz.qiye.163.com | 143 | 993 |
Error code
Common Code Description:
554 5.5.3 Domain exceeds the sent limit.
421 HL: REP The IP transmission behavior is abnormal, and there are a large number of receivers who do not exist, and the connection is temporarily prohibited. Check if any users are sending viruses or spam, and check the validity of the sending list.
421 HL: ICC The number of concurrent connections on this IP was too large, exceeding NetEase's limit, and the connection was temporarily banned. Check if any users are sending viruses or spam, and reduce the number of concurrent IP connections.
421 HL: IFC This IP sent a large number of letters in a short period of time, exceeding NetEase's restrictions, and was temporarily banned from connecting. Check if any users are sending viruses or spam and reduce the frequency of sending them.
421 HL:MEP The IP address has abnormal sending behavior, and there are a large number of forged sending domain names, and the connection is temporarily prohibited. Please check if any users are sending viruses or spam emails and send them with a real and valid domain name.
450 MI: CEL sender has too many erroneous instructions. Please check the sending procedure;
450 MI: The DMC is currently sending more messages than the limit on the number of messages being connected. Please reduce the number of mail delivered in each connection;
450 MI: CCL sender sends more instructions than normal. Please check the sending procedure;
450 RP: DRC currently connects to send more recipients than the limit. Control the number of mail delivered each time;
450 RP: CCL sender sends more instructions than normal. Please check the sending procedure;
450 DT: The RBL sending IP is in one or more RBLs. Please refer to ithttp://www.rbls.org/Information about RBL;
450 WM: BLI This IP is not in the list of sending addresses allowed by NetEase;
450 WM: BLU This user is not in the list of sending users allowed by NetEase;
451 DT: SPM, please try again The body of the email has spam characteristics or the sending environment lacks standardization, and is temporarily rejected. Please keep the email queue and resend the email after two minutes. Adjust the content of the email or optimize the sending environment;
451 Requested mail action not taken: too much fail authentication The login is temporarily prohibited due to too many failed logins. Please check your password and account verification settings;
451 RP: Excessive error instructions from the CEL sender. Please check the sending procedure;
451 MI: The DMC is currently sending more messages than the limit on the connection. Control the number of mail delivered in each connection;
451 MI: SFQ The number of messages sent by the sender in 15 minutes exceeds the limit, please control the frequency of sending messages;
451 RP: The QRC sender has accumulated more recipients in a short period of time than the limit, and the sender is temporarily banned from sending letters. Please reduce the frequency of the user's emails;
451 Requested action aborted: local error in processing The system is temporarily faulty, please try to send it again later;
500 Error: bad syntaxU sent the smtp command syntax is incorrect;
550 MI: NHD HELO command is not allowed to be empty;
550 MI: IMF sender email address is not standard. Please refer to ithttp://www.rfc-editor.org/Definitions of email specifications;
550 MI: SPF sending IP is not SPF cleared by the sending domain. Please refer to ithttp://www.openspf.org/Definition of SPF specification;
550 MI:DMA The message is not DMARC cleared by the sending domain. Please refer to ithttp://dmarc.org/Definition of DMARC specification;
550 MI: The STC sender has more connections than the limit for the day, and the sender's mail is no longer accepted that day. Please control the number of connections;
550 RP: FRL NetEase mailbox does not open relay;
550 RP: The number of RCL bulk recipients exceeds the limit, please reduce the number of recipients per message;
550 RP: TRC sender has accumulated more recipients in a day than the limit and no longer accepts messages from that sender on that day. Please reduce the frequency of the user's emails;
550 DT: SPM email body has a lot of spam characteristics or a lack of canonization in the sending environment. Adjust the content of the email or optimize the sending environment;
550 Invalid User requested by the user does not exist;
550 User in blacklist The user is not allowed to send messages to NetEase users;
550 User suspended The user is disabled or frozen;
550 Requested mail action not taken: too much recipient The number of mass messages exceeds the limit.
552 Illegal Attachment does not allow the sending of attachments of this type, including attachments ending in .uu, .pif, .scr, .mim, .hqx, .bhx, .cmd .vbs.bat .com .vbe.vb .js .wsh, etc.;
552 Requested mail action aborted: exceeded mailsize limit The size of the letter sent exceeds the maximum limit allowed by NetEase mailbox.
553 Requested action not taken: NULL sender is not allowed to be empty, please use the real sender to send;
553 Requested action not taken: Local user only SMTP type machines are only allowed to send senders to this site;
553 Requested action not taken: no smtp MX only MX type machines are not allowed to be users of this site;
553 authentication is required SMTP authentication is required, please check the client settings;
554 DT: SPM sends emails that contain unsolicited information or are identified as spam. Check if any users are sending viruses or spam;
554 DT: SUM envelope sender and letter sender mismatch;
554 IP is rejected, smtp auth error limit exceed The IP has failed to verify too many times, and the connection is temporarily blocked. Check the verification information settings;
554 HL: The IHU sending IP is temporarily suspended due to spam or abnormal connection behavior. Check whether there are any abnormalities in the sending procedure of the sending IP address in history.
554 HL: IPB The IP address is not in the list of sending addresses allowed by NetEase;
554 MI: STC The sender's cumulative number of emails exceeds the limit on the same day, and the sender's letter will no longer be accepted on that day. Please reduce the frequency of sending messages;
554 MI: SPB This user is not in the list of sending users allowed by NetEase;
554 IP in blacklist This IP is not in the list of sending addresses allowed by NetEase. |
Posted on 1/15/2026 9:44:30 AM
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