@monkeyman 所以说更适合的还是类似马自达的转子引擎？

也是莫名其妙，结果上去看了下，之前创建的几个数据库都基本还是空的

@fqlion 腾讯云测试是绕
[root@Qcloud ~]# traceroute 108.61.223.47 -T
traceroute to 108.61.223.47 (108.61.223.47), 30 hops max, 60 byte packets
1 * * *
2 10.249.248.140 (10.249.248.140) 0.603 ms 0.649 ms 0.793 ms
3 * * *
4 113.108.236.218 (113.108.236.218) 2.442 ms 2.407 ms 2.430 ms
5 121.14.60.125 (121.14.60.125) 2.432 ms 113.108.236.217 (113.108.236.217) 2.510 ms 121.14.60.125 (121.14.60.125) 2.448 ms
6 121.14.50.5 (121.14.50.5) 4.978 ms 121.14.50.17 (121.14.50.17) 3.992 ms 121.14.50.21 (121.14.50.21) 6.296 ms
7 113.108.208.21 (113.108.208.21) 4.481 ms 113.108.208.225 (113.108.208.225) 6.562 ms 113.108.208.21 (113.108.208.21) 6.635 ms
8 * * *
9 202.97.60.42 (202.97.60.42) 8.350 ms 202.97.60.182 (202.97.60.182) 7.536 ms 7.180 ms
10 202.97.52.150 (202.97.52.150) 160.674 ms 162.792 ms 160.703 ms
11 202.97.50.22 (202.97.50.22) 152.000 ms 202.97.90.114 (202.97.90.114) 170.559 ms 169.319 ms
12 xe-0-1-0-21.r00.lsanca07.us.bb.gin.ntt.net (129.250.9.9) 172.401 ms xe-0-8-0-25.r01.snjsca04.us.bb.gin.ntt.net (129.250.9.69) 158.140 ms xe-0-1-0-21.r00.lsanca07.us.bb.gin.ntt.net (129.250.9.9) 173.410 ms
13 ae-2.r23.lsanca07.us.bb.gin.ntt.net (129.250.3.237) 172.156 ms ae-10.r23.snjsca04.us.bb.gin.ntt.net (129.250.3.174) 156.944 ms ae-2.r23.lsanca07.us.bb.gin.ntt.net (129.250.3.237) 171.388 ms
14 ae-12.r31.tokyjp05.jp.bb.gin.ntt.net (129.250.3.192) 166.750 ms 166.588 ms 165.483 ms
15 ae-17.r01.tokyjp05.jp.bb.gin.ntt.net (129.250.7.89) 167.370 ms 167.367 ms 167.304 ms
16 xe-0-6-0-21.r01.tokyjp05.jp.ce.gin.ntt.net (117.103.177.238) 166.272 ms 170.539 ms 168.780 ms
17 45.63.125.66.vultr.com (45.63.125.66) 162.317 ms 161.241 ms 167.129 ms
18 108.61.223.47.vultr.com (108.61.223.47) 169.264 ms 166.014 ms 167.993 ms

因为你用的数据库不准确

@daiv vultr 悉尼，美国绕一大圈
[root@Qcloud ~]# traceroute 108.61.212.12 -T
traceroute to 108.61.212.12 (108.61.212.12), 30 hops max, 60 byte packets
1 * * *
2 10.249.252.140 (10.249.252.140) 0.699 ms 0.866 ms 1.011 ms
3 * * *
4 113.108.236.222 (113.108.236.222) 6.085 ms 3.541 ms 6.107 ms
5 * * *
6 121.14.50.25 (121.14.50.25) 4.244 ms 113.108.209.233 (113.108.209.233) 7.458 ms 121.14.50.1 (121.14.50.1) 7.458 ms
7 113.108.208.217 (113.108.208.217) 7.730 ms 5.248 ms 8.149 ms
8 202.97.33.206 (202.97.33.206) 6.434 ms 6.373 ms 7.955 ms
9 * * 202.97.60.206 (202.97.60.206) 5.041 ms
10 202.97.51.102 (202.97.51.102) 206.396 ms 202.97.52.162 (202.97.52.162) 187.474 ms 187.412 ms
11 202.97.49.154 (202.97.49.154) 160.349 ms 202.97.50.58 (202.97.50.58) 266.043 ms 263.977 ms
12 206.111.14.101 (206.111.14.101) 210.523 ms 216.855 ms 209.946 ms
13 89.149.184.246 (89.149.184.246) 183.147 ms 207.88.14.212.ptr.us.xo.net (207.88.14.212) 290.593 ms xe-0-3-1.sjc20.ip4.gtt.net (141.136.110.242) 157.836 ms
14 207.88.12.142.ptr.us.xo.net (207.88.12.142) 268.577 ms vocus-gw.ip4.gtt.net (46.33.90.50) 197.819 ms 198.685 ms
15 207.88.13.225.ptr.us.xo.net (207.88.13.225) 301.067 ms 276.650 ms 397.435 ms
16 114.31.199.37 (114.31.199.37) 323.099 ms ip67-92-171-26.z171-92-67.customer.algx.net (67.92.171.26) 292.083 ms 160.350 ms
17 ten-2-0-0.bdr03.syd04.nsw.VOCUS.net.au (175.45.72.77) 339.847 ms bundle-101.cor01.sjc01.ca.VOCUS.net (114.31.199.242) 418.834 ms 440.797 ms
18 bundle-100.cor02.sjc01.ca.VOCUS.net (114.31.199.59) 550.824 ms 430.515 ms 430.140 ms
19 ten-0-2-0-2.cor01.syd04.nsw.VOCUS.net.au (114.31.199.45) 449.269 ms bundle-100.cor01.sjc01.ca.VOCUS.net (114.31.199.58) 444.193 ms xe-0-0-0.gw102.sy3.ap.equinix.com (27.111.240.137) 328.539 ms
20 ten-0-0-0.bdr03.syd04.nsw.VOCUS.net.au (175.45.72.93) 310.651 ms 180.189.25.6 (180.189.25.6) 328.493 ms xe-0-0-0.gw102.sy3.ap.equinix.com (27.111.240.137) 330.851 ms
21 108.61.212.12 (108.61.212.12) 405.362 ms as17819.cust.bdr03.syd04.nsw.VOCUS.net.au (175.45.73.194) 433.595 ms ten-2-0-0.bdr03.syd04.nsw.VOCUS.net.au (175.45.72.77) 328.971 ms
22 108.61.212.12.vultr.com (108.61.212.12) 405.805 ms as17819.cust.bdr03.syd04.nsw.VOCUS.net.au (175.45.73.194) 430.736 ms 458.166 ms

hosthatch 的也好不到哪去，绕日本
[root@Qcloud ~]# traceroute 168.1.1.212 -T
traceroute to 168.1.1.212 (168.1.1.212), 30 hops max, 60 byte packets
1 * * *
2 10.249.252.140 (10.249.252.140) 0.723 ms 0.834 ms 0.893 ms
3 * * *
4 113.108.236.222 (113.108.236.222) 3.567 ms 3.540 ms 3.555 ms
5 * * *
6 113.108.209.141 (113.108.209.141) 7.016 ms 121.14.50.13 (121.14.50.13) 6.715 ms 113.108.209.141 (113.108.209.141) 6.333 ms
7 113.108.208.185 (113.108.208.185) 4.261 ms 113.108.208.221 (113.108.208.221) 5.461 ms 5.463 ms
8 202.97.34.182 (202.97.34.182) 6.059 ms * 6.451 ms
9 * * *
10 * * 202.97.51.174 (202.97.51.174) 274.323 ms
11 202.97.50.26 (202.97.50.26) 197.742 ms 208.059 ms 202.97.50.62 (202.97.50.62) 290.643 ms
12 xe-0-2-0-25.r01.snjsca04.us.bb.gin.ntt.net (129.250.66.25) 281.124 ms 265.470 ms 265.884 ms
13 ae-2.r23.lsanca07.us.bb.gin.ntt.net (129.250.3.237) 281.806 ms ae-1.r22.snjsca04.us.bb.gin.ntt.net (129.250.3.26) 180.190 ms ae-2.r23.lsanca07.us.bb.gin.ntt.net (129.250.3.237) 274.700 ms
14 ae-12.r31.tokyjp05.jp.bb.gin.ntt.net (129.250.3.192) 173.099 ms 171.837 ms ae-2.r20.sngpsi05.sg.bb.gin.ntt.net (129.250.3.49) 308.383 ms
15 ae-18.r00.tokyjp03.jp.bb.gin.ntt.net (129.250.4.249) 231.168 ms 215.743 ms 220.412 ms
16 ae-0.softlayer.sngpsi02.sg.bb.gin.ntt.net (116.51.17.54) 206.539 ms 117.103.177.170 (117.103.177.170) 160.207 ms ae-0.softlayer.sngpsi02.sg.bb.gin.ntt.net (116.51.17.54) 192.721 ms
17 ae7.bbr02.eq01.tok01.networklayer.com (50.97.18.163) 173.007 ms 170.736 ms ae0.bbr01.ng01.per01.networklayer.com (50.97.19.234) 241.664 ms
18 * ae7.bbr02.ng01.per01.networklayer.com (50.97.19.233) 253.126 ms *
19 * * ae5.dar01.syd01.networklayer.com (50.97.19.149) 256.348 ms
20 * * *
21 * 168.1.1.212 (168.1.1.212) 257.834 ms po2.fcr01a.syd01.networklayer.com (168.1.18.133) 300.390 ms

新年快乐~在没有电子眼的金穗路隧道发来祝福

@xanyu 内燃机放在哪里更合适呢，内燃机只发电不需要考虑传动

huawei nexus ？

v=spf1 include:spf.mail.qq.com ~all

@RAKE MX 记录可回复不出来是趋势的网关还是麦咖啡的网关...或是 Exchange/Postfix

接以上，韵达快递，微软 Exchange Server
MX record found: mail.yundaex.com (Priority 10)
Connecting to mail.yundaex.com
Connected to mail.yundaex.com
Dialog with mail.yundaex.com ok
------------------------------------------------------------
220 CASHUB01.yundasys.com Microsoft ESMTP MAIL Service ready at Sun, 13 Dec 2015 18:09:28 +0800

申通快递， Winmail
MX record found: mail.sto.cn (Priority 5)
Connecting to mail.sto.cn
Connected to mail.sto.cn
Dialog with mail.sto.cn failed
------------------------------------------------------------
220 WINDOWS-K12NKJ5.sto.cn Winmail Mail Server ESMTP ready; Sun, 13 Dec 2015 18:16:40 +0800

六福珠宝， Postfix
MX record found: mail.lukfook.com.hk (Priority 20)
Connecting to mail.lukfook.com.hk
Connected to mail.lukfook.com.hk
Dialog with mail.lukfook.com.hk ok
------------------------------------------------------------
220 mail.lukfook.com.hk ESMTP Postfix

中国黄金，阿里云邮
MX record found: mxw.mxhichina.com (Priority 4)
MX record found: mxn.mxhichina.com (Priority 5)
Connecting to mxw.mxhichina.com
Connect to mxw.mxhichina.com failed
Connecting to mxn.mxhichina.com
Connected to mxn.mxhichina.com
Dialog with mxn.mxhichina.com ok
------------------------------------------------------------
220 mx1.aliyun-inc.com MX AliMail Server(10.147.43.61)
HELO verifyemailaddress.org
250 Ok
MAIL FROM: <[email protected]>
250 Mail Ok
RCPT TO: <[email protected]>

公安部，新版亿邮
MX record found: mail.mps.gov.cn (Priority 10)
Connecting to mail.mps.gov.cn
Connected to mail.mps.gov.cn
Dialog with mail.mps.gov.cn ok
------------------------------------------------------------
220 mps.gov.cn [18968] ESMTP eYou MTA v8.1.0; Sun, 13 Dec 2015 18:11:05 +0800

锤子科技， Office 365
MX record found: smartisan-com.mail.protection.outlook.com (Priority 1)
Connecting to smartisan-com.mail.protection.outlook.com
Connected to smartisan-com.mail.protection.outlook.com
Dialog with smartisan-com.mail.protection.outlook.com ok
------------------------------------------------------------
220 HK2APC01FT022.mail.protection.outlook.com Microsoft ESMTP MAIL Service ready at Sun, 13 Dec 2015 11:11:39 +0000

电脑爱好者，看起来像是 IIS 的邮件服务
MX record found: mailx.cfan.com.cn (Priority 10)
Connecting to mailx.cfan.com.cn
Connected to mailx.cfan.com.cn
Dialog with mailx.cfan.com.cn ok
------------------------------------------------------------
220 mailgateway.ccw.group Microsoft ESMTP MAIL Service, Version: 6.0.3790.4675 ready at Sun, 13 Dec 2015 19:23:30 +0800

三联周刊，腾讯企业邮箱
MX record found: mxbiz1.qq.com (Priority 5)
MX record found: mxbiz2.qq.com (Priority 10)
Connecting to mxbiz1.qq.com
Connected to mxbiz1.qq.com
Dialog with mxbiz1.qq.com ok
------------------------------------------------------------
220 bizmx3.qq.com MX QQ Mail Server
HELO verifyemailaddress.org
250 bizmx3.qq.com
MAIL FROM: <[email protected]>
250 Ok
RCPT TO: <[email protected]>

最世文化 /文艺风象， QQ 域名邮箱（挺老的产品了，后被企业邮箱替代）
MX record found: mxdomain.qq.com (Priority 10)
Connecting to mxdomain.qq.com
Connected to mxdomain.qq.com
Dialog with mxdomain.qq.com ok
------------------------------------------------------------
220 bizmx3.qq.com MX QQ Mail Server
HELO verifyemailaddress.org 250 bizmx3.qq.com
MAIL FROM: <[email protected]>
250 Ok
RCPT TO: <[email protected]>

漫友 /新蕾 Story101 （记得多年前喜欢漫画和小说的时候经常给他们投稿，现在，好像停刊了），中资源企业邮箱，基于 Postfix
MX record found: mxa158d.chinaemail.cn (Priority 5)
MX record found: mx158d.chinaemail.cn (Priority 10)
Connecting to mxa158d.chinaemail.cn
Connected to mxa158d.chinaemail.cn
Dialog with mxa158d.chinaemail.cn ok
------------------------------------------------------------
220 mx100.chinaemail.cn ESMTP Postfix (2.4.1)
HELO verifyemailaddress.org
250 mx100.chinaemail.cn
MAIL FROM: <[email protected]>
250 2.1.0 Ok
RCPT TO: <[email protected]>

这东西还有个有趣的功能就是，可以看到各个公司的邮件服务提供商（不过很多是自建）和邮件服务器

台积电，自建的邮件服务
MX record found: mg.tsmc.com (Priority 10)
Connecting to mg.tsmc.com
Connected to mg.tsmc.com
Dialog with mg.tsmc.com ok
------------------------------------------------------------
220 z08fvironport1.tsmc.com.tw ESMTP
HELO verifyemailaddress.org

MTK ，也是自建，还挂了一台服务器
MX record found: mailgw02.mediatek.com (Priority 10)
MX record found: mailgw01.mediatek.com (Priority 10)
Connecting to mailgw02.mediatek.com
Connected to mailgw02.mediatek.com
Dialog with mailgw02.mediatek.com failed
------------------------------------------------------------
Connecting to mailgw01.mediatek.com
Connected to mailgw01.mediatek.com
Dialog with mailgw01.mediatek.com ok
------------------------------------------------------------
220 Cellopoint E-mail Firewall v3.9.12 Build 0813 ready

高通，服务器名挺有意思
MX record found: gatewayhorse2.qualcomm.com (Priority 10)
MX record found: gatewayhorse1.qualcomm.com (Priority 10)
MX record found: gatewaypony02.qualcomm.com (Priority 10)
MX record found: gatewaypony01.qualcomm.com (Priority 10)
Connecting to gatewayhorse2.qualcomm.com
Connected to gatewayhorse2.qualcomm.com
Dialog with gatewayhorse2.qualcomm.com ok
------------------------------------------------------------
220-gatewayhorse2.qualcomm.com ESMTP
220 QUALCOMM does not authorize the use of its computers or computer networks to deliver unsolicited electronic mail advertisements.

中兴，用的 Websense 的产品
MX record found: mx5.zte.com.cn (Priority 10)
MX record found: mx6.zte.com.cn (Priority 10)
Connecting to mx5.zte.com.cn
Connected to mx5.zte.com.cn
Dialog with mx5.zte.com.cn ok
------------------------------------------------------------
220 220 OK***************
HELO verifyemailaddress.org
250 Websense Email Security Gateway

华为也用他家的...
MX record found: mx1.huawei.com (Priority 10)
MX record found: mx2.huawei.com (Priority 15)
MX record found: mx4.huawei.com (Priority 20)
MX record found: mx3.huawei.com (Priority 20)
Connecting to mx1.huawei.com
Connected to mx1.huawei.com
Dialog with mx1.huawei.com ok
------------------------------------------------------------
220 Huawei Message Service is ready.
HELO verifyemailaddress.org
250 Websense email protection service

中联重科，用的 263 的邮件服务
MX record found: mxw.263.net (Priority 5)
MX record found: mx.263.net (Priority 10)
Connecting to mxw.263.net
Connected to mxw.263.net
Dialog with mxw.263.net ok
------------------------------------------------------------
220 Welcome to TAP gateway for 263
HELO verifyemailaddress.org
250 263.net
MAIL FROM: <[email protected]>
250 Ok
RCPT TO: <[email protected]>

中信银行，趋势科技 IMSVA
MX record found: email1.citicbank.com (Priority 10)
Connecting to email1.citicbank.com
Connected to email1.citicbank.com
Dialog with email1.citicbank.com ok
------------------------------------------------------------
220 ESMTP IMSVA

兴业银行， McAfee Email Gateway EG5500
MX record found: smtp.cib.com.cn (Priority 10)
MX record found: smtp1.cib.com.cn (Priority 15)
Connecting to smtp.cib.com.cn
Connected to smtp.cib.com.cn
Dialog with smtp.cib.com.cn ok
------------------------------------------------------------
220 mailgw1.cib.com.cn EG5500/SMTP Ready.

交通银行，用的尚易
MX record found: smtpnmp.bankcomm.com (Priority 10)
MX record found: smtp.bankcomm.com (Priority 20)
Connecting to smtpnmp.bankcomm.com
Connected to smtpnmp.bankcomm.com
Dialog with smtpnmp.bankcomm.com ok
------------------------------------------------------------
220 bankcomm.com Anti-spam GT for Coremail System (bankcomm[20151012])

人民银行，同样用的尚易，而且还是测试版(demo)
MX record found: mail.pbc.gov.cn (Priority 5)
Connecting to mail.pbc.gov.cn
Connected to mail.pbc.gov.cn
Dialog with mail.pbc.gov.cn failed
------------------------------------------------------------
220 pbc.gov.cn Anti-spam GT for Coremail System (mtdemo-pbc[20151210])

中投公司 /中央汇金，梭子鱼网关
MX record found: mxtele-a.huijin-inv.cn (Priority 50)
MX record found: mxctc-a.huijin-inv.cn (Priority 50)
MX record found: mail.huijin-inv.cn (Priority 100)
MX record found: mxctc.huijin-inv.cn (Priority 100)
Connecting to mxtele-a.huijin-inv.cn
Connected to mxtele-a.huijin-inv.cn
Dialog with mxtele-a.huijin-inv.cn ok
------------------------------------------------------------
220 barr
HELO verifyemailaddress.org
250 barracuda.china-inv.cn Hello

中国国航， McAfee Email Gateway EG4500
MX record found: mailx.airchina.com.cn (Priority 10)
Connecting to mailx.airchina.com.cn
Connected to mailx.airchina.com.cn
Dialog with mailx.airchina.com.cn ok
------------------------------------------------------------
220 mailx.airchina.com EG4500/SMTP Ready.

南方航空， McAfee Email Gateway EG5500
View Email Owner
MX record found: smtp1.cs-air.com (Priority 10)
Connecting to smtp1.cs-air.com
Connected to smtp1.cs-air.com
Dialog with smtp1.cs-air.com ok
------------------------------------------------------------
220 eg1.csair.com EG5500/SMTP Ready.

春秋航空， MDaemon
MX record found: mail1.air-spring.com (Priority 5)
Connecting to mail1.air-spring.com
Connected to mail1.air-spring.com
Dialog with mail1.air-spring.com failed
------------------------------------------------------------
220 china-sss.com ESMTP MDaemon 9.6.3; Sun, 13 Dec 2015 17:38:53 +0800

滴滴快的，网易企业邮箱
MX record found: hzmx01.mxmail.netease.com (Priority 5)
MX record found: hzmx02.mxmail.netease.com (Priority 10)
Connecting to hzmx01.mxmail.netease.com
Connected to hzmx01.mxmail.netease.com
Dialog with hzmx01.mxmail.netease.com ok
------------------------------------------------------------
220 hzqiyemx.proxy.163.com ESMTP ready
HELO verifyemailaddress.org
250 hzqiyemx.proxy.163.com

京东，趋势科技 IMSVA
MX record found: mx.jd.com (Priority 10)
Connecting to mx.jd.com
Connected to mx.jd.com
Dialog with mx.jd.com ok
------------------------------------------------------------
220 Welcome to JD.com
HELO verifyemailaddress.org
250 IMSVA43.JD.COM

荔枝 FM ，腾讯企业邮箱
MX record found: mxbiz1.qq.com (Priority 5)
MX record found: mxbiz2.qq.com (Priority 10)
Connecting to mxbiz1.qq.com
Connected to mxbiz1.qq.com
Dialog with mxbiz1.qq.com ok
------------------------------------------------------------
220 bizmx9.qq.com MX QQ Mail Server
HELO verifyemailaddress.org
250 bizmx9.qq.com
MAIL FROM: <[email protected]>
250 Ok
RCPT TO: <[email protected]>

美团， Postfix
MX record found: mx01.meituan.com (Priority 10)
MX record found: mx02.meituan.com (Priority 10)
MX record found: mail3.sankuai.info (Priority 20)
Connecting to mx01.meituan.com
Connected to mx01.meituan.com
Dialog with mx01.meituan.com ok
------------------------------------------------------------
220 it-mx01.lf.sankuai.com ESMTP Postfix

优步， Google Apps
MX record found: aspmx.l.google.com (Priority 10)
MX record found: alt2.aspmx.l.google.com (Priority 20)
MX record found: alt1.aspmx.l.google.com (Priority 20)
MX record found: aspmx5.googlemail.com (Priority 30)
MX record found: aspmx4.googlemail.com (Priority 30)
MX record found: aspmx2.googlemail.com (Priority 30)
MX record found: aspmx3.googlemail.com (Priority 30)
Connecting to aspmx.l.google.com
Connected to aspmx.l.google.com
Dialog with aspmx.l.google.com ok
------------------------------------------------------------
220 mx.google.com ESMTP b9si17685639wmf.44 - gsmtp
HELO verifyemailaddress.org
250 mx.google.com at your service
MAIL FROM: <[email protected]>
250 2.1.0 OK b9si17685639wmf.44 - gsmtp
RCPT TO: <[email protected]>

豆瓣，也是 Google Apps
MX record found: aspmx.l.google.com (Priority 10)
MX record found: alt2.aspmx.l.google.com (Priority 20)
MX record found: alt1.aspmx.l.google.com (Priority 20)
MX record found: aspmx3.googlemail.com (Priority 30)
MX record found: aspmx2.googlemail.com (Priority 30)
Connecting to aspmx.l.google.com
Connected to aspmx.l.google.com
Dialog with aspmx.l.google.com ok
------------------------------------------------------------
220 mx.google.com ESMTP g66si17678822wmg.41 - gsmtp
HELO verifyemailaddress.org
250 mx.google.com at your service
MAIL FROM: <[email protected]>
250 2.1.0 OK g66si17678822wmg.41 - gsmtp
RCPT TO: <[email protected]>

爱稀饭动画，腾讯企业邮箱
MX record found: mxbiz1.qq.com (Priority 5)
MX record found: mxbiz2.qq.com (Priority 10)
Connecting to mxbiz1.qq.com
Connected to mxbiz1.qq.com
Dialog with mxbiz1.qq.com ok
------------------------------------------------------------
220 bizmx4.qq.com MX QQ Mail Server
HELO verifyemailaddress.org
250 bizmx4.qq.com
MAIL FROM: <[email protected]>
250 Ok
RCPT TO: <[email protected]>

哔哩哔哩，也是腾讯
MX record found: mxbiz1.qq.com (Priority 5)
MX record found: mxbiz2.qq.com (Priority 10)
Connecting to mxbiz1.qq.com
Connected to mxbiz1.qq.com
Dialog with mxbiz1.qq.com ok
------------------------------------------------------------
220 bizmx3.qq.com MX QQ Mail Server
HELO verifyemailaddress.org
250 bizmx3.qq.com
MAIL FROM: <[email protected]>
250 Ok
RCPT TO: <[email protected]>

全国人大，亿邮（貌似绝迹好久了）
Connecting to smtp.npc.gov.cn did not work
MX record found: smtp.npc.gov.cn (Priority 10)
Connecting to smtp.npc.gov.cn
Connected to smtp.npc.gov.cn
Dialog with smtp.npc.gov.cn failed
------------------------------------------------------------
220 smtp ready
HELO verifyemailaddress.org
250 eyou.net HELO, pleased to meet verifyemailaddress.org

中国政府网，中标麒麟
MX record found: mx.mail.gov.cn (Priority 10)
Connecting to mx.mail.gov.cn
Connected to mx.mail.gov.cn
Dialog with mx.mail.gov.cn ok
------------------------------------------------------------
220 cs2c antispam server1.1

The Email Address Syntax is correct
Connecting to mxbiz1.qq.com worked
We feel that [email protected] is valid

MX record found: mxbiz1.qq.com (Priority 5)
MX record found: mxbiz2.qq.com (Priority 10)
Connecting to mxbiz1.qq.com
Connected to mxbiz1.qq.com
Dialog with mxbiz1.qq.com ok
------------------------------------------------------------
220 bizmx3.qq.com MX QQ Mail Server
HELO verifyemailaddress.org
250 bizmx3.qq.com
MAIL FROM: <[email protected]>
250 Ok
RCPT TO: <[email protected]>
250 OK
QUIT
221 Bye.
------------------------------------------------------------
Email address [email protected] accepted

- See more at: http://www.verifyemailaddress.org/#result


The Email Address Syntax is correct
Connecting to kr1-aspmx1.worksmobile.com worked
We feel that [email protected] is valid

MX record found: kr1-aspmx1.worksmobile.com (Priority 10)
MX record found: kr1-aspmx2.worksmobile.com (Priority 20)
Connecting to kr1-aspmx1.worksmobile.com
Connected to kr1-aspmx1.worksmobile.com
Dialog with kr1-aspmx1.worksmobile.com ok
------------------------------------------------------------
220 mx.worksmobile.com ESMTP Dar1WwJwS+eHiomQE23hMg - nsmtp
HELO verifyemailaddress.org
250 mx.worksmobile.com Pleased to meet you
MAIL FROM: <[email protected]>
250 2.1.0 OK Dar1WwJwS+eHiomQE23hMg - nsmtp
RCPT TO: <[email protected]>
250 2.1.5 OK Dar1WwJwS+eHiomQE23hMg - nsmtp
QUIT
221 2.0.0 Closing connection Dar1WwJwS+eHiomQE23hMg - nsmtp
------------------------------------------------------------
Email address [email protected] accepted

- See more at: http://www.verifyemailaddress.org/#result


The Email Address Syntax is correct
Connecting to in1-smtp.messagingengine.com worked
We feel that [email protected] is valid
View Email Owner
MX record found: in1-smtp.messagingengine.com (Priority 10)
MX record found: in2-smtp.messagingengine.com (Priority 20)
Connecting to in1-smtp.messagingengine.com
Connected to in1-smtp.messagingengine.com
Dialog with in1-smtp.messagingengine.com ok
------------------------------------------------------------
220 mx2.messagingengine.com ESMTP . No UCE permitted.
HELO verifyemailaddress.org
250 mx2.messagingengine.com
MAIL FROM: <[email protected]>
250 2.1.0 Ok
RCPT TO: <[email protected]>
250 2.1.5 Ok
QUIT
221 2.0.0 Bye
------------------------------------------------------------
Email address [email protected] accepted

- See more at: http://www.verifyemailaddress.org/#result


原理大致就是这样，通过 SMTP 连接对方服务器罢了
另外，国内也有个模仿版，同盾邮霸 http://youba.labs.fraudmetrix.cn/

乌龟没问题吧

@tntsec 他不是在北京和广州有节点么

阿里云 CDN 或者腾讯云 CDN 吧

你是在频繁抓取数据么

@yrom 没有 IMEI/MEID 的安卓设备多了去了，例如所有的电视 /电视盒子，投影机以及大半的安卓平板