P800/P802
White Paper, January 2003
In case (1) User A will connect using a circuit
If User A now replies to the message and selected ‘Send Now’ on the P800 whilst connected to internet, the Messages application will connect to the SMTP server at ISP A, which will in turn connect to the POP server at ISP B and the message will be transferred.
In Case (2) everything happens as in case (1) except that the connection to the ISP is made directly from the GSM/GPRS network using TCP/IP networking rather than modems. Because everything is managed by the mobile operator, the POP and SMTP servers can be made available.
In case (3) the P800 will be connected to the internet via the GSM/GPRS network and the route to the servers is over the internet. Most ISPs allow a connection from the internet to the POP server since access to the POP server is
Sending
Typical configurations include:
•Block all external access to the SMTP Server
•SMTP server works provided the sender address is in a domain belonging to the ISP.
•SMTP server works provided the recipient is in a domain belonging to the ISP.
•SMTP server works only after a successful login has been made to an associated POP server.
•SMTP server requires a username and password
There are a number of possible workarounds:
•Switch to an
•Check if the SMTP server can be accessed in ‘Secure Mode’ using a password.
•Find out if the mobile operator has an SMTP server configured to work where the sender
•Try checking the mail on the POP server and then sending – some ISPs will allow access to the SMTP server from a user who has recently successfully logged in to the POP sever
•Ask the ISP to allow external access from the IP number range used by the mobile operator’s GPRS service
•Connect to the ISP using CSD or HSCSD when
E-Mail Fetch and Delete Operation
The P800 is designed to work both as the only means of accessing
The P800 Messages application fetches
When a message in the P800 inbox is deleted, the P800 will delete it from the server the next time it connects and does a ‘Get&Send’ operation.
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