Eric Shubert wrote:
> Bulend Kolay wrote:
>> I use vpopmail on qmail.
>> I have many customer domains on that mail server.
>> One of these customer domains tells me that, they rarely receive the
>> same mail a few times. That problem becomes nearly once a week for
>> this customer.
>> I haven't any complain from my other customers.
>> They use outlook or o.express for their mails.
>> What may the problem be ?
>> Do I have to change my configuration ?
> This can be caused by the load on your server. Sometimes a long scan
> time will cause the sending server to time out before the scan is
> complete and your server acknowledges receipt. The sending server then
> obligingly resends. Check the smtp logs for the corresponding duplicate
> email. You'll see 2 receipts for it if this is what's happening.
Oh, and if this is the problem, I would install spamdyke to lighten the
load on your server. It works great. You'll be scanning a lot less
email, and filtering more spam at the same time. http://spamdyke.org/. Personally, I'd install spamdyke in any case. You'll be glad you did.