Email Error #5.1.2 sending e-mail to external recipient

Problem: SMTP 5.1.2 Error when sending an email, What does it mean? Solution:SMTP 5.1.2 Error message indicates the domain name is incorrect or doesn’t exist in the address the message was sent to. Verify again whether the e-mail address is correct and try to change the Outlook mode to the online mode if it does…

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Workspace – Common Bouncebacks with Email

Common Bouncebacks with Email Bounceback Error Cause of Error Resolution 421 Server temporarily unavailable. Try again later. IB101 The email queue is experiencing higher than normal email volume. Please try again later. Invalid Recipient Bounces Bounceback Error Cause of Error Resolution 550 Recipient not found. The recipient is not a valid email address. Remove the…

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What is Opt-in email

Opt-in email [1] is a term used when someone is given the option to receive “bulk” email, that is, email that is sent to many people at the same time. Typically, this is some sort of mailing list, newsletter, or advertising. Without obtaining permission before sending email, the email i

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Email Error Codes – Bounce-backs error

 The following are very general error messages and an explanation of what they mean. 退信代码说明:  •421 HL:REP 该IP发送行为异常,存在接收者大量不存在情况,被临时禁止连接。请检查是否有用户发送病毒或者垃圾邮件,并核对发送列表有效性;  •421 HL:ICC 该IP同时并发连接数过大,超过了网易的限制,被临时禁止连接。请检查是否有用户发送病毒或者垃圾邮件,并降低IP并发连接数量;  •421 HL:IFC 该IP短期内发送了大量信件,超过了网易的限制,被临时禁止连接。请检查是否有用户发送病毒或者垃圾邮件,并降低发送频率;  •421 HL:MEP 该IP发送行为异常,存在大量伪造发送域域名行为,被临时禁止连接。请检查是否有用户发送病毒或者垃圾邮件,并使用真实有效的域名发送;  •450 MI:CEL 发送方出现过多的错误指令。请检查发信程序;  •450 MI:DMC 当前连接发送的邮件数量超出限制。请减少每次连接中投递的邮件数量;  •450 MI:CCL 发送方发送超出正常的指令数量。请检查发信程序;  •450 RP:DRC 当前连接发送的收件人数量超出限制。请控制每次连接投递的邮件数量;  •450 RP:CCL 发送方发送超出正常的指令数量。请检查发信程序;  •450 DT:RBL 发信IP位于一个或多个RBL里。请参考http://www.rbls.org/关于RBL的相关信息;  •450 WM:BLI 该IP不在网易允许的发送地址列表里;  •450 WM:BLU 此用户不在网易允许的发信用户列表里;  •451 DT:SPM ,please try again 邮件正文带有垃圾邮件特征或发送环境缺乏规范性,被临时拒收。请保持邮件队列,两分钟后重投邮件。需调整邮件内容或优化发送环境;  •451 Requested mail action not taken: too much fail authentication 登录失败次数过多,被临时禁止登录。请检查密码与帐号验证设置;  •451 RP:CEL 发送方出现过多的错误指令。请检查发信程序;  •451…

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Tips for creating a strong password

Passwords provide the first line of defense against unauthorized access to your computer. The stronger your password, the more protected your computer will be from hackers and malicious software. You should make sure you have strong passwords for all accounts on your computer. If you’re using a corporate network, your network administrator might require you…

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