On Tue, 27 Mar 2007, Arnt Gulbrandsen wrote:
2. I see quite a few addresses of the form 'localpart(_at_)hostname'. Say
1% and 1ppm of messages.
Yes, I see about 1 per 1000 on my MXs today. About 85% of them are @exe or
@dll so probably an artefact of one particular broken bit of ratware.
If 'localpart(_at_)tld' is guaranteed not to be valid, a smarthost's life is
simpler: 'localpart(_at_)something' is either a local address (not subject to
IETF rules) or invalid.
Private domains are not necessarily single-label, so your suggestion isn't
a general-purpose simplification and in fact probably *adds* complexity:
If your MTA can handle multi-label private domains correctly then it
should be able to handle single-label private domains without any special
f.a.n.finch <dot(_at_)dotat(_dot_)at> http://dotat.at/
SHANNON ROCKALL: NORTH OR NORTHWEST 5 TO 7, OCCASIONALLY GALE 8 IN SHANNON
AT FIRST, DECREASING 4 OR 5, OCCASIONALLY 6 LATER. MODERATE OR ROUGH. RAIN
THEN SHOWERS. GOOD, OCCASIONALLY MODERATE IN EAST AT FIRST.