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I know our department has been sending out mass e-mails to large groups of students this week. I wouldn't be surprised if other areas of the University, gearing up for fall semester and welcoming incoming freshmen, are doing the same. Gene on 8/11/2011 2:07 PM Gary Schrock said the following: > On 8/11/2011 1:58 PM, Wortz, Joshua wrote: >> We are getting the same thing over here. Messages are taking about 2 >> hours to fully deliver to the msu.edu domain. Tried sending some test >> messages from Gmail, and they too are taking a while to deliver. >> > > I did get a response from ATS: >> Our MX boxes (the incoming messages servers) are seeing a tremendous >> load this morning, and have been for the last couple of days. > > > Of course, the scary part is the students aren't even back yet, I > would guess the volume of mail is going to go up over the next couple > of weeks. > > Gary > >> Joshua Wortz >> RHCT - RHEL5 | MCSE - 2K3 | MCTS - Exchange 2007 | MCTS - Vista - >> Configuration | MCDST >> Systems Administrator >> Michigan State University >> College of Agriculture and Natural Resources >> [log in to unmask] >> 517.588.9344 (Cell) >> 517.353.4890 x232 (Office) >> >> >> >> -----Original Message----- >> From: Gary Schrock [mailto:[log in to unmask]] >> Sent: Thursday, August 11, 2011 12:10 PM >> To: [log in to unmask] >> Subject: [MSUNAG] 421 too many concurrent SMTP connections on >> mail.msu.edu >> >> I'm seeing a lot of 421 Too many concurrent SMTP connections errors >> this morning when connecting to mail.msu.edu. After doing some >> digging, I'm kinda wondering if this might be that mail.msu.edu is >> thinking that *my* server is causing too many connections, or if it's >> just that mail.msu.edu is kinda overwhelmed at the moment? We do >> send forth a reasonably amount of mail, but from a cursory glance, >> I'm not seeing an excessive number of connections when I look at >> netstat, so I don't >> *think* it's my end, but wondered if someone might have an idea. >> >> Looks like it's been happening for the last couple hours based on the >> delay times I'm seeing, and while some things are going through right >> away right now, I'm still seeing some bounces because of this. >> >> Gary