Hey, folks. We’re planning to upgrade to Zimbra 5.0.16 on Saturday, 5/16. If this poses a problem for you, let me know ASAP. Among other things, this release is expected to finally fix reliability issues with iCal syncing on OS X. Thanks!

We’re still working with Yahoo to have the block removed, but in the interim we’ve got mail routing changed such that mail can now freely flow to Yahoo. Thanks for your patience.

Our efforts to work with Yahoo to get them to remove the block has been unsuccessful and quite frustrating. We’re going to do an end run around the problem, and configure mail bound for Yahoo to take a different route there which will not be block…

We’ve narrowed down what caused the blockage. A user who forwards all his mail to Yahoo fired off several thousand jobs on the TeraGrid, all of which started failing, resulting in a near-constant flood of mail to that user. Yahoo interpreted this …

If you or someone you know is using Yahoo mail, please note that Yahoo has decided that it will not accept mail from our servers. We’re working on recitfying this. A number of users are forwarding their Argonne mail directly to their Yahoo mailbox…

In an attempt to ensure you’re inundated with communication from as many sources as possible, you can now follow us on your favorite social network, provided your favorite social network is one of either Twitter, Facebook, or Yammer. Twitter users…