The original message was received at Tue, 28 Jan 2025 10:36:51 +0100 from [165.154.252.200] ----- The following addresses had permanent fatal errors ----- (reason: 451 4.4.1 reply: read error from mta-189.21cn.com.) (reason: 550 5.7.0 DT:SPM .For more information, please visit https://feedback.qiye.163.com/static/feedback/#/bounce/ABFOBSMCeVJ1Wg0JcUt5cQYGHjVjKwF2ax1CCAwvHBhK) (reason: 550 5.7.0 DT:SPM .For more information, please visit https://feedback.qiye.163.com/static/feedback/#/bounce/ABFOBSMCeVJ1Wg0JcUt5cQYGHjVjKwF2ax1CCAwvHBhK) (reason: 550 5.7.0 DT:SPM .For more information, please visit https://feedback.qiye.163.com/static/feedback/#/bounce/ABFOBSMCeVJ1Wg0JcUt5cQYGHjVjKwF2ax1CCAwvHBhK) (reason: 550 Mail content denied [OGqA/Ptf1JSOoDHlAmC2ll8FjrsPXieRm3J1pu89CmnZhJFqL48IOsI= IP: 83.138.65.30]. https://open.work.weixin.qq.com/help2/pc/20056.) (reason: 550 5.7.0 DT:SPM .For more information, please visit https://feedback.qiye.163.com/static/feedback/#/bounce/ABFOBSMCeVJ4XVtacUt4IgYGHjVjKwF2axkSWwwvHBhK) (reason: 550 User suspended: longshibing@ime.ac.cn) (reason: 550 Mail content denied [MM26xUelqNM/QW91/QGzif5rVh4dUgZg5MDKU1uxxhsyrl9aTz57XDA= IP: 83.138.65.30]. https://open.work.weixin.qq.com/help2/pc/20056.) (reason: 550 Mail content denied [MpV5F2PDAuMbSPzn/hwCmp342qDXUKw5ozsRH2enX07FWY+DtJMikqQ= IP: 83.138.65.30]. https://open.work.weixin.qq.com/help2/pc/20056.) (reason: 550 User not found: longf04@mails.tsinghua.edu.cn) (reason: 550 5.1.1 : Recipient address rejected: User unknown in virtual mailbox table) ----- Transcript of session follows ----- ... while talking to mta-189.21cn.com.: >>> DATA >> DATA >> DATA ... Deferred: 450 Requested action not taken: FEDFygC39RxzpZhnx4dKAQ--.8570S3, please try again ... while talking to mxbiz1.qq.com.: >>> DATA ... Host unknown (Name server: dragon-inc.corn.cn: no data known) ... while talking to hzmx01.mxmail.netease.com.: >>> DATA ... Deferred: Connection timed out with hb-lx.com.cn. ... while talking to mx.cstnet.cn.: >>> DATA ... User unknown ... Deferred: Connection timed out with lgpump.cn. ... while talking to mxbiz1.qq.com.: >>> DATA >> DATA ... Deferred: Connection timed out with lsbg.cn.ctacdn.cn. ... while talking to mx1.dlut.edu.cn.: >>> DATA >> DATA ... Deferred: 450 Requested action not taken: UUJ2ygA3NZV4pphnj5nzAQ--.22528S2, please try again ... while talking to mta0.tsinghua.edu.cn.: >>> RCPT To: ... User unknown >>> DATA >> DATA >> DATA >> DATA >> DATA ,,... Deferred: 421-4.7.28 Gmail has detected an unusual rate of unsolicited mail. To protect ... Deferred: Connection timed out with npmt.net.cn. ... Deferred: Connection timed out with public1.sta.net.cn. ... while talking to riko.com.tw.: >>> DATA : Recipient address rejected: User unknown in virtual mailbox table 550 5.1.1 ... User unknown ... Deferred: Connection timed out with shlongshi.com.cn. ... while talking to smg.xidian.edu.cn.: >>> DATA ... Deferred: 450 Requested action not taken: OnB1ygBn0+iEp5hn1qhICA--.65474S3, please try again ... while talking to mail.xjtlu.edu.cn.: ... Deferred: 421 4.7.0 Not allowed. ... while talking to mail.xmu.edu.cn.: >>> DATA ... Deferred: 450 Requested action not taken: BgAi0gAnnWqMp5hn3BblAA--.13925S3, please try again 550 5.1.2 ,,,,,,... Host unknown (Name server: .: host not found)