Matthias Lewandowski writes on 12/4/2003 6:07 AM:
>>They usually simply reject after DATA instead of after RCPT TO, so
>>callouts generally don't work. However if a yahoo account is misused
>>for spamming and they start getting $bignumber of bounces, they reject
>>_this_ account after RCPT TO, so yahoo-callouts are not totally
>>useless.
Please learn to detect yahoo forgeries (mostly caught by HELO filters)
instead. I have posted, and Kevin Reed has posted, rulesets in exim to
do this.