Transparent hijacking of SMTP submission...

Marcin Cieslak saper at saper.info
Sat Nov 29 21:43:33 UTC 2014


On Thu, 27 Nov 2014, joel jaeggli wrote:

> I don't see this in my home market, but I do see it in someone else's...
> I kind of expect this for port 25 but...
> 
> J at mb-aye:~$telnet 147.28.0.81 587
> Trying 147.28.0.81...
> Connected to nagasaki.bogus.com.
> Escape character is '^]'.
> 220 nagasaki.bogus.com ESMTP Sendmail 8.14.9/8.14.9; Thu, 27 Nov 2014
> 19:17:44 GMT
> ehlo bogus.com
> 250-nagasaki.bogus.com Hello XXXXXXXXXXXXXXX.wa.comcast.net
> [XXX.XXX.XXX.XXX], pleased to meet you
> 250 ENHANCEDSTATUSCODES

Seen some anti-virus software (on Windows) doing this.
You might not be running Windows though. Some home
router with some "security improvement" ?

//Marcin


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