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A curiosity: tool to watch the SMTP communication

 
H Paul
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Hi,

1. Tcpmon help us to watch the HTTP communication.
Is there a similar tool to watch the SMTP communication when we send an email? (A curiosity.)

2. I used Apache Common Email to send an email. I noticed when I used a given specific public wifi. It failed. Is this a network issue (security, permission, etc...)
For other public wifi. It's OK.

1M Thanks.
 
Wouter Oet
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With a tool such as WireShark you can view any internet communication.
 
H Paul
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1. Wireshark downloaded, installed and saw many traffic/protocol. Still have to learn to use the tool to isolate and watch for mail related protocol.

2. In waiting, when I connected to attwifi, for example, the following command is OK (saw from other forum's threads)
>telnet smtp.googlemail.com 465

BUT when I connected to the troubled wifi, I got

>telnet smtp.googlemail.com 465
Connecting To smtp.googlemail.com...Could not open connection to the host, on port 465: Connect failed

(I still connected to Internet with no issue. )

Is the problem comes from the troubled wifi?

 
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