> You are right. I should and will fix that. However, fortuitously, it is
> safe because there are over 500 bytes available, and names returned by
> the DNS are limited to 255. RFC 1034 says:
Alas, not true. You overwrite smtp_data, whose position is
controllable by the outside user. To get the overrun, make the
HELO be followed by ~500 spaces....
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