sg-epk@jtk93.x29.jp はこの世界線に存在していません.
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<sg-epk@jtk93.x29.jp>
(reason: 550 5.1.1 <sg-epk@jtk93.x29.jp>... User unknown)
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.. while talking to mail.x29.jp.:
>>> DATA
<<< 550 5.1.1 <sg-epk@jtk93.x29.jp>... User unknown
550 5.1.1 <sg-epk@jtk93.x29.jp>... User unknown
<<< 503 5.0.0 Need RCPT (recipient)
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