Michael C. Toren on 25 Jun 2004 15:56:03 -0000


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Re: [PLUG] verizon dsl send mail


On Fri, Jun 25, 2004 at 09:22:01AM -0400, Art Alexion wrote:
> Thanks, Michael.  You and Rebecca have done a good job of explaining why
> MUAs, like mutt, need an external local MTA.  I am confused however by
> your references, above, to a "smart host".

There are essentially two things an MTA can do with a message that isn't
going to be locally delivered:  It can either lookup the MX hosts for the
destination address and contact those hosts directly, or it can send the
messages to another SMTP server -- a smarthost -- which will do the work
of looking up the MX hosts, and periodically retry contacting MX hosts
that initially timeout.  A smarthost is really just an SMTP server that
allows your MTA to relay though it, and is typically run by your ISP.

HTH,
-mct

-- 
perl -e'$u="\4\5\6";sub H{8*($_[1]%79)+($_[0]%8)}sub G{vec$u,H(@_),1}sub S{vec
($n,H(@_),1)=$_[2]}$_=q^{P`clear`;for$iX){PG($iY)?"O":" "forX8);P"\n"}for$iX){
forX8){$c=scalar grep{G@$_}[$i-1Y-1Z-1YZ-1Y+1ZY-1ZY+1Z+1Y-1Z+1YZ+1Y+1];S$iY,G(
$iY)?$c=~/[23]/?1:0:$c==3?1:0}}$u=$n;select$M,$C,$T,.2;redo}^;s/Z/],[\$i/g;s/Y
/,\$_/xg;s/X/(0..7/g;s/P/print+/g;eval' #     Michael C. Toren <mct@toren.net>

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