Yes. There are two useful mailing lists. First, we run an extremely low traffic mailing list solely to announce new versions of HTCondor. Follow the instructions for HTCondor World at http://research.cs.wisc.edu/htcondor/mail-lists/. Second, our users can be extremely knowledgeable, and they help each other solve problems using the HTCondor Users mailing list. Again, follow the instructions for HTCondor Users at http://research.cs.wisc.edu/htcondor/mail-lists/.
If you have any questions that are not listed in this FAQ, try looking on the HTCondor wiki at https://htcondor-wiki.cs.wisc.edu/index.cgi/wiki?p=HowToAdminRecipes. Try joining the HTCondor Users mailing list, where our users support each other in finding answers to problems. Follow the instructions at http://research.cs.wisc.edu/htcondor/mail-lists/. If you still can't find an answer, feel free to contact us at htcondor-admin@cs.wisc.edu.
Note that HTCondor's free e-mail support is provided on a best-effort basis, and at times we may not be able to provide a timely response. If guaranteed support is important to you, please inquire about our paid support services.