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10-23
>
退信提示:“MD Server Error 5:database error.”
10-23
>
退信提示:“SMTP error,RCPT TO:550 USe mail relays of your ISP”
10-23
>
退信提示:“554 5.7.0 message size violation”
10-23
>
退信显示:您的邮件大小超过收件方(google)服务器对于邮件大小的限制。(Your message exceeded Google's message size limits)
10-23
>
退信提示:“550 5.7.1 Recipient not authorized, your IP has been found on a block list”
10-23
>
退信提示:“MAIL FROM: 550 5.0.0 Mail rejected due to possible SPAM。”
10-23
>
退信提示:“delivery temporarily suspended:connect to mail.abc.com[xxx.xxx.xx.xx]:Connection timed out”
10-23
>
退信提示:“550 abc@domain:mailbox limit exceeded (inreply to end of DATA command)”
10-23
>
退信提示报错“domain abc.com MX query return retry”
10-23
>
退信提示:“501: domain missing or malformed”
10-23
>
退信提示:“550 Sender domain must exist ”
10-23
>
退信提示:“Host abc.com(xxx.xxx.xx.xx) MAIL FROM said 451
10-23
>
退信提示:“Host abc.com(xxx.xxx.xxx.xx) RCPT TO said 421 Refused. You have no reverse DNS entry. Contact abuse@abc.com for details”
10-23
>
退信提示:“No MX or A records for abc.com”
10-23
>
退信提示:“SMTP error, DOT: 554 5.7.1 This message has been blocked because the return email domain is invalid.(failed to obtain DNS record for domain abc.com)”
10-23
>
退信提示:“SMTP error, MAIL FROM:553 SPF check refused(softfail)”
10-23
>
退信提示:“SMTP error, RCPT TO: 550 [PERMFAIL] abc.com requires valid sender domain”
10-23
>
退信提示:“SMTP error, RCPT TO:550 No such domain at this location”
10-23
>
退信提示:“SMTP error, RCPT TO:553 5.7.1 sorry, that domain isn't in my list of allowed rcpthosts (chkuser)”
10-23
>
退信提示:“UnKnown can't find abc.com: Non-existent domain”
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