Can't get rid of old Thunderbird address.

If the IP address pool has much more resources than needs of clients, the following two reasons may cause address exhaustion:
1. An attacker keeps changing the CHADDR field and sending DHCP Discover packets to exhaust addresses. If so, contact Huawei engineers to deploy DHCP snooping to protect the IP address pool.
2. The DHCP server ping function is enabled on the DHCP server. This function tries to ping the allocated addresses before responding to DHCP Offer packets. If a client responds to any ping packet, the DHCP server considers that there are address conflicts and addresses are exhausted. To solve this problem, two methods are available:
1. Capture packets on the ports connected to the DHCP server. If a client responds to ping packets, prohibit the client.
2. Disable the DHCP server ping function using the undo dhcp server ping packet command.
3. Such as S5700, S6700

1. First open Mozilla Thunderbird and then go to tools menu and select settings.
2. Select account which wants to use.
3. Enter your Details.
4. Select POP or IMAP as the type of incoming server you are using.
5. Your incoming server is pop.example.net for POP or imap.example.net for IMAP.
6. Enter your Email address of senders and recipients.
7. Then verify your account and click on finish.
For other Info click -

http://mozillathunderbird.supportno.com/

Try changing the server port in the server.properties file. There may be another program using this port. If that does not wor try to start the server without being connected to a network (note when the server is changed you must append it to the ip. For example 192.168.1.2:25564)

I am sick of my handycafe server keeps changing its ip addres.....i have to reconfigure from each client every day.....how can i just change my handy cafe server ip address......?

Much more common is a sending issue. Often you have to send through your ISP server, contact them for what that server is, if you have sending issues.

I found directions for Outlook, which should be similar to Thunderbird:

Look closely at requires authentication settings....

Note: You must be a Yahoo! Mail Plus user to read Yahoo! Mail in an email reader program such as Microsoft Outlook. Click here for information about subscribing to Yahoo! Mail Plus.
To read your Yahoo! Mail Plus using Microsoft Outlook 2002 or 2003, follow these steps:

1. From the Tools menu, select Email Accounts.
2. Select Add a new email account and click Next.
3. Select POP3 and click Next.
4. Enter the following information:
   • User Information
     
     Your Name: Type your name as you'd like it to appear when you send an email message.
     
     E-Mail Address: Type your Yahoo! Mail Plus email address (for example, [email protected]).
   • Server Information
     
     Incoming mail server (POP3): Type plus.pop.mail.yahoo.com.
     
     Outgoing mail server (SMTP): Type plus.smtp.mail.yahoo.com.
   • Login Information
     
     User Name: Type your Yahoo! ID (your email address without the "@yahoo.com").
     
     Password: Type your Yahoo! password.
   • Select the Remember Password checkbox if you don't want Outlook to prompt you for your password each time you check your mail.
   • Do not select the Require logon using Secure Password Authentication (SPA) checkbox.
5. Click More Settings. The Internet E-mail Settings dialog box appears.
6. Select the Outgoing Server tab:
   • Select the My outgoing server (SMTP) requires authentication checkbox.
   • Make sure that Use same settings as my incoming mail server is selected.
7. Click the Advanced tab:
   • Under Incoming Server (POP3), select the This server requires an encrypted connection (SSL) checkbox. The number in the Incoming Server (POP3) field usually changes automatically from 110 to 995. If it doesn't, type 995.
   • In the Outgoing Server (SMTP) field, type 465. Under Outgoing Server (SMTP), select the This server requires an encrypted connection (SSL) checkbox.
   • If you want to save your Yahoo! Mail messages on both the Yahoo! Mail server and on your computer, select the Leave a copy of messages on the server checkbox. If you want your messages to be deleted from the Yahoo! server once Outlook has downloaded them onto your computer, leave the box unchecked.
     
     Note: After your messages are deleted from the server, we cannot retrieve them.
8. Click OK to close the Internet E-mail Settings dialog box.
9. Click Finish to close the Add New E-mail Account dialog box.
10. Click Close to close the Account Settings dialog box.

Troubleshooting tips
If you still can't send Yahoo! Mail from Outlook, you might be accessing the Internet through an ISP that is blocking the SMTP port. If this is the case, try using port 587 when sending email via Yahoo!'s SMTP server. To make this change:

1. From the Tools menu, select Account Settings. The Account Settings dialog box appears.
2. Select your Yahoo! Mail Plus account and click Properties. The Change E-mail Account dialog box appears.
3. Click More Settings. The Internet E-mail Settings dialog box appears.
4. Click the Advanced tab.
5. In the Outgoing Server (SMTP) box, type 587.
6. Click Apply, and then click OK to close the Internet E-mail Settings dialog box.
7. Click Close to close the Account Settings dialog box.

mail.google.com is a mail server address which won;t come up on the web
if you are looking for gmail/google mail
https://www.google.com/accounts/ServiceLogin?service=mail&passive=true&rm=false&continue=http%3A%2F%2Fmail.google.com%2Fmail%2F%3Fhl%3Den%26tab%3Dwm%26ui%3Dhtml%26zy%3Dl&bsv=zpwhtygjntrz&scc=1&ltmpl=default&ltmplcache=2&hl=en

if you download Thunderbird which is an email client made by Mozilla you will be able to recieve your mail with t-bird.

Here is a youtube video how to configure your mail in thunderbird, outlook etc
http://video.google.com/videosearch?q=google+mail+config&oe=utf-8&rls=org.mozilla:en-US:official&client=firefox-a&um=1&ie=UTF-8&ei=jVonSvT3I47ysQOk35DrCA&sa=X&oi=video_result_group&resnum=4&ct=title#

Error 721: Cannot connect to the Pop Server. (Incorrect POP Server IP Address) Pop Server is down.

Solution: Check the Pop Server IP Address. Contact the Network Administrator

Were you setting up email by chance, you need to make sure the email server settings are set correctly for your POP email provider. Otherwise you will get this message. If you don't use email, go into settings (Fax Parameters) and disable email features.

• Install FreePOPs and make sure it is running.
• Select Tools | Account Settings... from the menu in Mozilla Thunderbird.
• Click Add Account....
• Make sure Email account is selected.
• Click Continue.
• Enter your name under Your Name:.
• Type your Windows Live Hotmail address under Email Address:.
• Click Continue.
• Make sure POP is selected under Select the type of incoming server you are using..
• Enter "localhost" (not including the quotation marks) under Incoming Server:.
• Decide whether you want your Windows Live Hotmail account to use a separate Inbox, Drafts and other folders or appear under Local Folders.
• Click Continue.
• Enter your complete Windows Live Hotmail address under Incoming User Name:.
• Click Continue.
• Now click Done.
• Go to the Server Settings category of the account named after your Windows Live Hotmail address.
• Enter "2000" (not including the quotation marks) under Port:.
• If Mozilla Thunderbird has not selected your default outgoing mail server for the Windows Live Hotmail account, or if you want to change it:
  • Go to the root of the Windows Live Hotmail account.
  • Select the desired account under Outgoing Server (SMTP):.
  • To add a new outgoing mail server — you cannot send mail through FreePOPs, but you could use another free email account's, say Gmail's or AIM Mail's — go to the Outgoing Server (SMTP) category and click Add....
• Click OK.

By changing the user name, you can download mail from any Windows Live Hotmail folder (not just the Inbox).

u need to enable SSL in your email client

Your DHCP server will keep track of which MAC Addresses have been given what IP addresses. From there, find the IP address of your Print Server. Ping the IP address to confirm IP connectivity between your computer and the print server. You should then be able to upgrade the firmware.