The parameter dc:tributeType only works in some applications. To render Honor or Memorial in an autoresponder, use the parameters dc:isTributeDonation or dc:isMemorialDonation. These parameters render "true" or "false". We can use a conditional to interpret these results and give the desired output. Here is an example:

<p>Thank you for your  [[?[[S120:dc:isTributeDonation]]::true::honor::]] 
[[?[[S120:dc:isMemorialDonation]]::true::memorial::]] gift.</p>

This renders "Thank you for your honor gift." or "Thank you for your memorial gift."