咨询问题-关于日本对25号端口

智勇双全

今天接到客户问题。对方用的IP是218.138.43.58，属于日本那边的。测试连接过来就是不见25号端口。是否日本那边的ISP对25号端口进行限制了。有没有这方面的信息呢？把smtp端口更改成587好像就可以了。就是找不到这方面的新闻或信息。有确定该问题的麻烦告知。谢谢。

218.107.207.*.是我邮局服务器的IP！


09:29:02.925044 218.138.43.58.1253 > 218.107.207.*.110: . [tcp sum ok] ack 1 win 65535 (DF) (ttl 111, id 15145, len 40)
09:29:02.926332 218.107.207.*.110 > 218.138.43.58.1253: P [tcp sum ok] 1:19(1 ack 1 win 5840 (DF) (ttl 64, id 32669, len 5
09:29:03.083383 218.138.43.58.1253 > 218.107.207.*.110: P [tcp sum ok] 1:8(7) ack 19 win 65517 (DF) (ttl 111, id 15150, len 47)
09:29:03.083408 218.107.207.*.110 > 218.138.43.58.1253: . [tcp sum ok] ack 8 win 5840 (DF) (ttl 64, id 32670, len 40)
09:29:03.083445 218.107.207.*.110 > 218.138.43.58.1253: P [tcp sum ok] 19:42(23) ack 8 win 5840 (DF) (ttl 64, id 32671, len 63)
09:29:03.266856 218.138.43.58.1253 > 218.107.207.*.110: F [tcp sum ok] 8:8(0) ack 42 win 65494 (DF) (ttl 111, id 15155, len 40)
09:29:03.267004 218.107.207.*.110 > 218.138.43.58.1253: F [tcp sum ok] 42:42(0) ack 9 win 5840 (DF) (ttl 64, id 32672, len 40)
09:29:03.425196 218.138.43.58.1253 > 218.107.207.*.110: . [tcp sum ok] ack 43 win 65494 (DF) (ttl 111, id 15162, len 40)
09:29:12.192723 218.138.43.58.1255 > 218.107.207.*.110: S [tcp sum ok] 2966234960:2966234960(0) win 65535 <mss 1460,nop,nop,sackOK> (DF) (ttl 111, id 15165, len 4
09:29:12.192747 218.107.207.*.110 > 218.138.43.58.1255: S [tcp sum ok] 4124132433:4124132433(0) ack 2966234961 win 5840 <mss 1460,nop,nop,sackOK> (DF) (ttl 64, id 0, len 4
09:29:12.344272 218.138.43.58.1255 > 218.107.207.*.110: . [tcp sum ok] ack 1 win 65535 (DF) (ttl 111, id 15166, len 40)
09:29:12.346117 218.107.207.*.110 > 218.138.43.58.1255: P [tcp sum ok] 1:19(1 ack 1 win 5840 (DF) (ttl 64, id 31193, len 5
09:29:12.499710 218.138.43.58.1255 > 218.107.207.*.110: P [tcp sum ok] 1:25(24) ack 19 win 65517 (DF) (ttl 111, id 15171, len 64

HawaiiLeo

不知道你的客户是公司还是个人，用的哪个公司的宽带接入服务啊？
反正我在家是只能用outlook收信，不能发信，应该是给ISP屏蔽了

wangqiquan12

关注中,我也碰到类似问题.

YoTu

587是显性SMTP默认端口。