해당 부분을 체크해 보십시오.
-------------------- Original message --------------------
※ 필수입력정보 ※
▷ 제품버젼 :
▷ 오류발생 메뉴/주소 :
▷ 에러메세지 :
Error Message : 550 5.7.1 Sender rejected because SPF check failed IuuCYGc-TVeGIr0TyJ3kiA - nsmtp [****@****]
-- You SendMail --
>> Received: from user00 (115.23.74.239)
>> by ******** (210.127.211.18) with [Nmail V3.7 20061019(ST)]
>> for <****@****> from <****@****>;
>> Thu, 27 Apr 2017 14:38:36 +0900
>> Content-Type: multipart/mixed;
>> boundary="=_NextPart_2rfkindysadvnqw3nerasdf";
>> charset="KS_C_5601-1987"
>> From: ****@****
>> Subject: =?EUC-KR?B?pLyktaS8?=
>> To: ****@****
>> Cc: ****@****
>> MIME-Version: 1.0
>> Date: Thu, 27 Apr 2017 14:40:08 +0900
>> X-Priority: 3
>> X-Library: Indy 9.00.10
>>
>> This is a multi-part message in MIME format
>>
>> --=_NextPart_2rfkindysadvnqw3nerasdf
>> Content-Type: text/plain
>> Content-Transfer-Encoding: 7bit
>>
>>
>> --=_NextPart_2rfkindysadvnqw3nerasdf
>> Content-Type: application/octet-stream;
>> name="EX20170427_143937.640.PDF"
>> Content-Transfer-Encoding: base64
>> Content-Disposition: attachment;
>> filename="EX20170427_143937.640.PDF"
▷ 질문내용 :
다른 메일 계정으로는 네이버 계정에 송수신 문제가 없으나
해당 계정인 ****@**** 은 네이버 송신에 계속 리턴메일이 옵니다.
정확한 원인 파악을 위해 문의드립니다.
