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SMTP error from remote mailer after RCPT TO:<[email protected]>:
host sinamail1.sina.com.hk [202.85.139.200]: 553 sorry, your envelope sender is in my badmailfrom list (#5.7.1)

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SMTP error from remote mailer after initial connection:
host www.citymail.com.tw [211.20.183.112]:
503 Need MAIL before RCPT

怎麼會這樣子呢?