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John Valenti writes: > > On October 23, at 5:18 PM October 23, Laurence Bates wrote: > >> In addition, I regularly have problems getting security codes for >> software that I purchase off the Internet and need to use immediately. > > Laurence, this is probably from the greylisting... email from a new > sender is automatically rejected the first (few?) times, just to help > make sure it is a valid smtp server. > > I have noticed this issue too, but felt that it was a worthwhile tradeoff > to reject more spam using this method. > > As I recall, a second message from the same sender goes thru immediately. > So if there is some means of getting the remote end to send any sort of > message to you first, the important message should come thru right away. > Maybe someone from the mail team could comment on this? After the second attempt at delivery, in under a 4 hour time period, the server is then trusted for approximately 36 days. (The process must be repeated afterwards) Unfortunately there are web apps which don't use an email server to send out confirmations, etc from their pages. They attempt at sending only 1 message without worrying about delivery errors. Please submit a problem ticket with the ACNS Help Desk at http://help.msu.edu if you're having an issue like this. If possible we try to see if a sending host is able to be RFC complaint with retrying delivery. If this fails and the server doesn't appear to be a potential large source of spam, then we can add its IP address to an exception list. > > >> I don’t blame ACNS for the email delays since they are clearly related >> to the SPAM spikes that we typically get just before Fall and Spring >> breaks. > > Not sure where you are getting the spam spikes related to breaks? I > thought it was 24x7 problem, about 97% of messages are spam. Yeah, Spammers unfortunately don't rest. We do see overall system spikes that correspond to the University academic schedule. (I'm sure many other services do as well) Today's performance issues aren't related to Spam, but due to our issues with performing backups. More information is posted at: http://servicestatus.list.msu.edu -Ed