> >Not unless RFC821 has been superseded: > > 4.5.3. SIZES > >[...] > > text line > > The maximum total length of a text line including the > <CRLF> is 1000 characters (but not counting the leading > dot duplicated for transparency). Actually RFC 821 has been pretty much superceded by RFC 2821. It's a Proposed Standard right now. The line length limitation is still the same, though. >Oddly, the message format RFC (RFC822) puts no limit on line length. RFC 822 has also been superceded by RFC 2822, a Proposed Standard. There is no mention of line length because the message format can be used with transport protocols other than SMTP.