Dakons blog

Erstellt: 3. 1. 2007, 21:00
GeƤndert: 8. 8. 2007, 09:17

Broken by implementation

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Das ganze auf Englisch, vielleicht lesen die Brummer ja mit.

My SMTP implementation is rather anal about the command syntax. With this I reject dozens of mail per day just because they send me crappy commands. Between all this messages it's still quite unusual if the sending SMTP part logs a syntax error. That means that when I start to send a mail the other SMTP server sends garbage. Normally this means that I've done something wrong, so I started digging a bit.

Yesterday I found out that sssecure.net sends SMTP replys like "250 Ok\r\r\n". Took some time to find out what was happening as I initially expected an off-by-one on my side. After some time I found out that the company that states "Providing outstanding security for internet services since 1995" gives there customers the ultimate email security: receiving no mails at all. One of the customers seems to be kinseyspharmacy.com, as their MX points to sssecure. At the other hand I'm not that sure that they don't become what they deserve as their website looks as if they could be just another spammer. Don't know if they are, but garage pharma companies tend to be.

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