> > I noticed the OP was sending from brandeis.edu. I presume he's hosting tens > of thousands of email addresses, for students and staff. Even with volume > and educational discounts, the cost can be significantly high, just because > the number of users is so high. And it all needs to be run on private > educational institution funding resources. >
Yes - we are indeed running thousands of e-mail addresses. I won't say tens of thousands just yet, but certainly more than 1000, less than 100,000 :-). In going with a third-party filtering service, cost would definitely be a factor. Since Brandeis has "gone Google," at least according to the ads in North and South Stations, we would ideally outsource our MX services to them. I'm doing so for my personal domain, but doing so for thousands of e-mail addresses is a little more challenging. There are things to think about like how to treat prospective students, how to handle e-mail aliases to mailing lists, how to do directory sync, etc. All probably doable (plenty of other folks have done so), but it takes time. As things stand, we can currently do our own mail routing before it goes off to its final destination. For full disclosure, we're currently using greylisting, reverse lookups, then various RBL checks (Spamhaus, Barracuda, Spamcop) and a bunch of SMTP syntax checks before we even make it to Spamassassin. Still doesn't catch everyone, unfortunately. For now, I think we need to make sure we're running the latest SA, update our rules, then see where we stand. John _______________________________________________ bblisa mailing list [email protected] http://www.bblisa.org/mailman/listinfo/bblisa
