[exim] protocol synchronization error

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著者: Zbigniew Szalbot
日付:  
To: Exim users
題目: [exim] protocol synchronization error

Dear all,

Yestarday I saw such entries in logs:

2007-08-28 12:32:55 SMTP protocol synchronization error (input sent without
waiting for greeting): rejected connection from
H=aajg7.neoplus.adsl.tpnet.pl [83.4.240.7] input="EHLO void#defonic\r\n"

I guess it is another way of violating the RFC and I shouldn't worry about
it? There was no synchronization between the sender (or attacker) and my
system - this is what it seems to say to me. Just asking because I hear
these days numerous attempts are carried out to discover security holes in
available MTAs.

Regards,

Zbigniew Szalbot
www.lcwords.com