Move error message 552 to err_size
Protect code from misbehaving on sizeof(int) != sizeof(char*)
Protect qmail-smtpd from exceedingly long (e.g. 2GB) header lines
netqmail 1.05
dot-qmail.9: Update for changed (19980613) conf-patrn default
Qmail is now in the public domain
netqmail 1.06
Import debian build scripts