On 21 May 99, at 15:44, Dave Wilson wrote: > > On this subject, what is the *correct* way for an MTA to treat an > Errors-To: RFC822 header that is different from the MAIL FROM: in the > envelope? > The correct way to treat it is to ignore it. The RFC821 MAIL FROM is the only correct place to bounce to. If you take a look at RFC 2076 (http://www.cis.ohio-state.edu/htbin/rfc/rfc2076.html) you will see that Errors-To: is "non-standard, discouraged". Francoise