>header_size_limit =3D 256 years ago, spammers used to put 10s of adressess in the cc: and to: headers, while 99%+ of legit mail put 1 or a few. 256 helped reject the worst spammers.
>I increase this directive to 998 as RFC 2822 says: > >header_size_limit = 998 spammers don't play by RFC rules Len
