mailer.conf question

I'd like to send emails to different aliases based on the repository
location of a checked in file. i have my postcommit hook and mailer.py setup
fine and added the following section to my mailer.conf file

[docs]
for_paths = https://svn.tt-da.com/mdx/docs/*
# # set a custom prefix
commit_subject_prefix = [MDX Docs Change]
# # override the default, sending these elsewhere
to_addr = sales_at_tt-da.com
# # use the revision author as the from address
from_addr =

 unfortunately I don't seem to get any different behavior (than just sending
email to the default developers alias) when i commit a file

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