On Mon, 2004-02-02 at 20:04, Douglas F. Calvert wrote: > Hello, > How come no one has mixmaster delivery turned on? I turned it on for a > second and then became nervous when no one else had it turned on. Totoro1,2 and Moria1,2 have smtp-via-mixmaster delivery enabled. The reason that most people don't have it is that it isn't especially useful: sending a Type-III message through a direct Type-III exit node is likely to be more reliable, since it doesn't get the Type-II network involved at all. It doesn't _really_ create another exit node: it only fakes it. The option is only there so that I can test exit functionality without having to deal with running an exit node. Once I'm on an ISP with a TOS that allows me to run my own exit node, I'll switch to offering a direct exit. Probably, the option will go away some time before/around Mixminion 0.1.0. > And > for that matter how come very few people have frag turned on? Are these > broken or susceptible to breakage? Thanks a lot... Fragment reassembly is not, to my knowledge, broken. There are a few drawbacks, however. First, there are _possible_ DoS attacks, and you will need to allocate more disk space than for a normal server (especially if you allow very large fragmented messages). Second, some people may not want to allow very large files to exit their servers (to save their bandwidth, and avoid involvement with the RIAA and friends). Third, the feature is only useful if you are offering direct SMTP: sending very large messages (>20K) with SMTP-via-Mixmaster is not reliable. I suspect, however, that some people who aren't offering fragment reassembly are just too busy to edit their mixminiond.conf files any more than necessary to keep their servers running. (Do any admins have other reasons?) -- Nick
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