SMPT server timeout

[Vexander]

The company director has an Acer notebook that is running windows XP and
Office 2003, it connects to the network via a 4 port wireless AP, and
collects mail from an mDeamon 10.0.5 eMail server.

At lease once a day Outlook starts to through a SMTP tie out error and stops
sending eMails, all eMails are stored in the out box. A restart of Outlook
clears the error and sends the eMails, until tomorrow.

To try clear this error I have,
1. Restarted the eMail server
2. Replaced the Hub/AP
3. Deleted and recreated the eMail profile.

Any other suggestions?

Thank you in advance