[Exim] socket bind()

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Hie Guys ,kepp getting this error , sometimes my user can not ping the server , bit i can ping from the server ,or rathre they can not receive mails
Pliz help

2004-08-11 15:36:32 socket bind() to port 25 for address (any IPv4) failed: Address already in use
: daemon abandoned
2004-08-11 15:40:41 exim 4.22 daemon started: pid=759, no queue runs, listening for SMTP on port 2
5 (IPv4)
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Duncan Rack
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