php – 失败的电子邮件通知

我正在使用phpmailer在Yii1中发送邮件.我开发的系统每天发送数千封电子邮件.通常它的工作正常,但有时系统无法发送电子邮件.邮件成功传送一段时间后(如果系统第一次无法发送电子邮件,则会再次尝试)
).我有时会收到不同类型的电子邮件错误.不确定如何解决这些错误：

>邮件错误：

The following From address failed: test@test.com : MAIL not accepted
from server,x.x.x.x SMTP; Client was not authenticated to send
anonymous mail during MAIL FROM
[MWHPR11CA0017.namprd11.prod.outlook.com]SMTP server error: 5.7.57
SMTP; Client was not authenticated to send anonymous mail during MAIL
FROM [MWHPR11CA0017.namprd11.prod.outlook.com]

>以下发件人地址失败：

test@test.com : MAIL not accepted from server

> SMTP错误：

Data not accepted.SMTP server error: 2.1.5 Recipient OK

>以下发件人地址失败：

test@test.com : MAIL not accepted from server,354,Start mail input;
end with < CRLF >.< CRLF >SMTP server error: Start mail input; end
with < CRLF >.< CRLF > SMTP server error: Start mail input; end with
< CRLF >.< CRLF >

> SMTP错误：

The following recipients failed:xxx@xxx.com

所以上面是我有时会遇到的不同类型的错误.对于#5,似乎收件人不正确,所以一个人没事.但其他人呢？怎么解决？