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Email headers, IP addresses and MAC addresses

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jaguar222

jaguar222

Technical User
Oct 6, 2010
2
CA
In an email header, does the MAC address of the computer's NIC appear? I know the IP address of the email server appears.
 
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Is any MAC address visible in an email header? (of a router near the email server)
 
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None is and the IP that may show would be your ISP. What are you using for an email client, IE: Outlook, Thunderbird?
 
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MAC addresses do not appear in email headers or in the SMTP transactions, just IP addresses. However, the MAC address is used at lower levels of the TCP connection and can be seen with different tools, at least if watched in real time.
 
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