WHMCS Email Sending Failed – SMTP connect() failed

WHMCS Email Sending Failed – SMTP connect() failed

WHMCS Email Sending Failed – SMTP Error: Could not authenticate

Validation Error: The following From address failed: noreply@yourdomain.com : MAIL FROM command fail

Validation Error: The following From address failed: noreply@yourdomain.com : MAIL FROM command failed,mail from account doesn’t conform with authentication (Auth Account:support@yahuhost.net|Mail Account:noreply@yourdomain.com) ,440,SMTP server error: MAIL FROM command failed Detail: mail from account doesn’t conform with authentication (Auth Account:support@yahuhost.net|Mail Account:noreply@yourdomain.com) SMTP code: 440

首先要排除SMTP端口是否被防火墙限制,如防火墙已解除SMTP Port限制,还发生如上错误,请检查以下设置

1. 检查WHM ->> SMTP restriction

SMTP restriction 设置为disabled

2.检查WHMCS系统设置(以WHMCS 8.0为例)

以下图片所示的邮箱地址设置要一致,否则会报错

3. 设置完成,WHMCS 发件SMTP问题成功解决