問：你好，發到俄羅斯的郵件被退信，麻煩查下原因，謝謝
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,發到俄羅斯的郵件被退信
答：您好，根據退信錯誤碼查詢到是 這個原因。
問：你好，這個郵件地址，我們一直有在郵件來往，現在是什么原因發不出去呢？這個錯誤代碼寫的我完全看不明白
答：您好，我司根據對方域名的MX解析將該郵件發送到 mx4.masterhost.ru 上面，但是 mx4.masterhost.ru 拒絕接收，原因是是指接收人的郵件地址是不是該郵件服務器上找到。也許該電子郵件服務被禁用或刪除。
問：發到俄羅斯的郵件發不出去，發出去的都是一片空白
答：您好，看了下只有郵件頭，寫郵件的時候是否有寫內容呢？
問：你好，我客戶從俄羅斯發郵件發不過來，一直被退信，我們這邊已經給他設置為白名單了，但還是退，這個郵箱地址一直有郵件往來的，就最近開始經常被退信，麻煩查下原因，謝謝，下面是我客戶發來的退信內容：
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@sh-flyingshare.comСu43Eоu431щu435нu438енu435 бu44Bлu43E дu43Eсu442аu432лu435нu43E иu437-зu430 пu440оu431лu435мu44B срu430зu440еu448еu43Dиu44Fмu438 иu43Bибu435зu43Eпu430сu43Dоu441тu44Cю Сu43Eоu431щu435нu438емu43Eгоu442кu43Bоu43Dиu442ьмu43Eдu435рu430тu43Eр аu434рu435сu430тмu43Eжu435тпu440иu43Dиu43Cаu442ьсu43Eоu431щu435нu438яэu43Bеu43Aтu440оu43Dнu43Eйпu43Eчu442ылu438шu44C оu442 нu435кu43Eтu43Eрu44Bхпu43Eлu443чu430тu435лu435й лu438бu43E жu435 дu43Eсu442аu432кu435 пu440еu43Fяu442сu442вu443еu442 дu440уu433оu435 оu433рu430нu438чu435нu438е
Дu438аu433нu43Eсu442иu447еu441кu438есu432еu434еu43Dиu44F дu43Bяаu434мu438нu438сu442рu430тu43Eрu43Eв
Фu43Eрu43Cиu440уu44Eщu438йсu435рu432еu440: alfa.entuziast.ru
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Иu441хu43Eдu43Dыu435 зu430гu43Eлu43Eвu43Aисu43Eоu431щu435нu438я
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([fe80::fc65:3dde:35b8:dd62]) with mapi id 14.03.0181.006; Fri, 10 Nov 2017 12:28:02 0300From: =?windows-1251?B?wPLr4O3y4CAtIMzl7eXk5uXwIO/uIOfg6vPv6uDs?= To: \”\’@sh-flyingshare.com\’\” Subject: FW: New order nov10Thread-Topic: New order nov10Thread-Index: AdNaBZ7vdKlT 82USluUVH/jQCLQDwAAEfHQAAASA8A=Date: Fri, 10 Nov 2017 09:28:02 0000Message-ID: <87742F5AC8E2DBB6D294F68D5ABC03703@ex2k10.entuziast.ru>References: <87742F5AC8E2DBB6D294F68D5ABC036D3@ex2k10.entuziast.ru> <87742F5AC8E2DBB6D294F68D5ABC036EB@ex2k10.entuziast.ru>In-Reply-To: <87742F5AC8E2DBB6D294F68D5ABC036EB@ex2k10.entuziast.ru>Accept-Language: ru-RU, en-USContent-Language: ru-RUX-MS-Has-Attach: yesX-MS-TNEF-Correlator:x-originating-ip: [127.0.0.1
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答：您好，是 這個地址發過來的嗎？
檢查對方域名是設置了spf但是這次的發信IP為 alfa.entuziast.ru[127.0.0.1]未在spf里面，導致spf驗證失敗被拒絕了。