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BGP hijack from 23724 -> 4134 China?

Subject: BGP hijack from 23724 -> 4134 China?
From: jeroen at mompl.net (Jeroen van Aart)
Date: Fri, 09 Apr 2010 18:01:43 -0700
In-reply-to: <[email protected]>
References: <[email protected]> <[email protected]> <[email protected]> <[email protected]> <031b01cad787$0fdf9c30$2f9ed490$@net> <[email protected]> <[email protected]> <[email protected]> <[email protected]> <[email protected]>

Patrick Giagnocavo wrote:
> This DID actually bite my company about 3 years ago.
> 
> A customer went to China (usually in NYC) and could not send email
> through the mail server because they were using POP-before-SMTP instead
> of the mail submission port .

The problem did not lie with blocking IPs. But with offering a flawed 
service such as pop before smtp to begin with. I know many ISPs/ESPs 
still do, much to my chagrin. The only way to submit email should be 
port 587 with TLS encryption, 3 years ago one could be forgiven for 
offering deprecated (*) port 465 with SSL, but not anymore (msoft 
clients have been fixed).

Regards,
Jeroen

http://www.iana.org/assignments/port-numbers
* urd             465/tcp    URL Rendesvous Directory for SSM

References:
- BGP hijack from 23724 -> 4134 China?
  - From: jay at west.net (Jay Hennigan)
- BGP hijack from 23724 -> 4134 China?
  - From: bruns at 2mbit.com (Brielle Bruns)
- BGP hijack from 23724 -> 4134 China?
  - From: pfunix at gmail.com (Beavis)
- BGP hijack from 23724 -> 4134 China?
  - From: w.d.clayton at gmail.com (Will Clayton)
- BGP hijack from 23724 -> 4134 China?
  - From: aaron at wholesaleinternet.net (Aaron Wendel)
- BGP hijack from 23724 -> 4134 China?
  - From: michael.holstein at csuohio.edu (Michael Holstein)
- BGP hijack from 23724 -> 4134 China?
  - From: bbillon-ml at splio.fr (Benjamin BILLON)
- BGP hijack from 23724 -> 4134 China?
  - From: jeroen at mompl.net (Jeroen van Aart)
- BGP hijack from 23724 -> 4134 China?
  - From: bbillon-ml at splio.fr (Benjamin Billon)
- BGP hijack from 23724 -> 4134 China?
  - From: patrick at zill.net (Patrick Giagnocavo)

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