Re: {bb} smtp greet_pause

[Henrik Storner <henrik-bb@hswn.dk>]

In <Pine.GSO.4.10.10510050711560.18513-100000@odd.lunainternet.net> John Hodson <john@WorldHQ.net> writes:

>I am using FEATURE(`greet_pause', `700') in sendmail, to deal with
>"slammer" style spam engines.

>Basically this introduces a 700 millisecond delay between connection, and
>the sendmail greeting message. If the remote client sends data before
>that greeting, then it is not implementing the smtp protocol correctly,
>and the server responds by not accepting any further data from that
>client.

>Problem is, BB looks (behaves) like a slammer!

>Is there a way of introducing a delay between the initial connection to
>port 25, and the sending of the text message?

No. It's a limitation in the bbnet network test tool used by BB - it
immediately sends a "QUIT" to the remote end and just grabs whatever
data the server sends back - usually, the banner from the service.

BTW, bbgen and Hobbit behave in the same way.


Henrik

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