Thanks Jake. It might be the slow connection/upload speed they have over there.

Still I'll think about your suggestions. At the moment, the box is running on P3 with 512 MHz and a 256Kbps bandwidth line.

What all the services I could stop safely without affecting the mail server? This box is dedicated for mail service only. And to ssh it occasionally to check logs etc, we need to keep the ssh daemon running, apart from that, I could boot it into init mode 3 (console only) and what other services I could turn-off.

I've installed it on CentOS 4.3

Well, init 3 would be best. No need to waste CPU-clicks on the GUI if you're not using it.
The other services probably aren't eating much if they're not being used. They just leave potential holes to get in. The data pipe you have is rather restrictive. I don't know the math for that pipe off the top of my head, but a 768K fractional T1 can effectively transmit roughly 350 Megs of data per hour, so you can best-guess your pipe to transmit 115 Megs per hour. Throw in some attachments, and you could easily bottle-neck that.
Where exactly are you noticing the bottle-necks, of at all? Might be able to adjust a few things to help speed it up in specific areas....

Re: [qmailtoaster] To improve the performance

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