This Message was undeliverable due to the following reason:
Your message was not delivered because the destination computer refused
to accept it (the error message is reproduced below). This type of error
is usually due to a mis-configured account or mail delivery system on the
destination computer; however, it could be caused by your message since
some mail systems refuse messages with invalid header information, or if
they are too large.
Your message was rejected by mx-za.fax.tc for the following reason:
5.7.1 Message refused by DNSBL check. bl.spamcop.net / 60.36.166.12 This email from IP 60.36.166.12 has been rejected. The email message was detected as spam. Check if your IP address listed on one of the block lists For more Info please contact your provider.
The following recipients did not receive this message:
<*******@fax.tc>
Please reply to <**********@plala.or.jp>
if you feel this message to be in error.
Reporting-MTA: dns; msa12.plala.or.jp
Arrival-Date: Fri, 25 Mar 2022 10:21:56 +0900
Received-From-MTA: dns; msl12.plala.or.jp (172.23.12.106)
Final-Recipient: RFC822; <*******@fax.tc>
Action: failed
Status: 5.3.0
Remote-MTA: dns; mx-za.fax.tc (54.247.7.185)
Diagnostic-Code: smtp; 554 5.7.1 Message refused by DNSBL check. bl.spamcop.net / 60.36.166.12 This email from IP 60.36.166.12 has been rejected. The email message was detected as spam. Check if your IP address listed on one of the block lists For more Info please contact your provider.
※OKWAVEより補足:「ひかりTVのサービスやISPぷらら」についての質問です。