歡迎信寄送失敗，giga不能收

[sun0939]

我用次網域space.line.com.tw當郵件主機
用1.5的 歡迎信寄送成功 (都是亂碼) giga在電腦上寄會被退回，在giga的webmail則不會，kimo則正常

用1.8.的 歡迎信寄送失敗(若用line.com.tw當郵件主機則歡迎信寄送成功 )
giga在電腦上寄會被退回，在giga的webmail則不會，kimo則正常

付上giga退信內容麻煩大大幫我解答

This is the Postfix program at host mail1out.giga.net.tw.

I''m sorry to have to inform you that the message returned
below could not be delivered to one or more destinations.

For further assistance, please send mail to <postmaster>

If you do so, please include this problem report. You can
delete your own text from the message returned below.

The Postfix program

<001@line.com.tw>: Name service error for line.com.tw: Host not found

[Arnor]