Does deploying more than one SMTP Servers with more internet lines increase the outgoing mailing speed
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Hi friends, Does deploying more than one SMTP Servers with more internet lines i.e. plugging more than one LAN cards on one machine increase the outgoing mailing speed Please post ur comments.
Sushant Duggal.
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Hi friends, Does deploying more than one SMTP Servers with more internet lines i.e. plugging more than one LAN cards on one machine increase the outgoing mailing speed Please post ur comments.
Sushant Duggal.
Probably not. It's most likely that you're limited by the upstream bandwidth of your connection to your ISP. Our upstream bandwidth is only about 400kbps on ADSL. Your mail server should support concurrent outgoing connections. Ours - Exchange Server 2003 SP2 - is currently set to a limit of 10 outbound connections total, and a limit of 10 connections per mail domain. I reduced these from the defaults - I think the default is 1000 outbound connections. I reduced the limits to ensure that the limited bandwidth was used more effectively, but it does mean that messages can be held up if a lot of large messages are sent (or a single large message is sent to multiple domains). Large messages are a problem generally. SMTP has no resume capability, so if the connection breaks, the server has to resend the message again from the beginning. This can cause a large message to 'stick' in the queues.
Stability. What an interesting concept. -- Chris Maunder