Follow these steps below to set smtp
2620 in Outlook Express:
1. Open Outlook Express, click on Tools and then Account
2. Select your email account and then click Properties
3. Select Servers, make sure the Outgoing mail server (SMTP) has been filled in your SMTP server assigned by CommuniLink, such as smtp.wcpdemo.com. For details, please visit CS Center Account Information at https://support.communilink.net
4. Under the Advance page, update the Outgoing server (SMTP) value from25 to 2620, 465 or 587
5. Click OK and then Close to complete the setting.