Hello,

To discover some strange issue I've put some additional logging into HELO 
and RCPT ACLs:

acl_check_helo:
        deny
                # reject IP-addresses IN HELO/EHLO
                message = Bad HELO/EHLO
                condition = 
${lookup{$sender_helo_name}nwildlsearch{BL_BAD_HELO}{yes}{no}}

acl_check_rcpt:
        warn
                logwrite = ---$sender_host_address/$sender_helo_name---
        [...]

After that I got in log:

Feb  2 14:31:59 crow exim[39322]: 2007-02-02 14:31:59 H=(201.250.198.147) 
[201.250.198.147] rejected EHLO or HELO 201.250.198.147: Bad HELO/EHLO
Feb  2 14:32:01 crow exim[39322]: 2007-02-02 14:32:01 ---201.250.198.147/---
Feb  2 14:32:05 crow exim[39322]: 2007-02-02 14:32:05 H=[201.250.198.147] 
F=<[EMAIL PROTECTED]> rejected RCPT <[EMAIL PROTECTED]>: 201.250.198.147 listed 
by list.dsbl.org

Now a riddle: what HELO did remote host send?! 
Any suggestions?

-- 
Kind Regards,   Alexander Shikoff
[EMAIL PROTECTED]
Mob.: +380 67 946 31 49

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