<< Mail Server Surveys
- Scanning: Scanning is done on an IP basis, i.e., I do not scan
domains/fully qualified domains (FQDN), but IP addresses. By doing
so I avoid to scan the same IP address twice or more because of
multiple domains that share the same IP address.
- I try to focus on subnets of hosting companies that offer dedicated
servers to their customers. Usually these dedicated servers come
with only one IP address so the percentage of mail servers spreading
across multiple IP addresses is low.
- Results: I try to list the most popular mail servers in the
results table. Other mail servers with a minor role are merged
under "Unknown / Other". "Unknown / Other"
also contains the mail servers that do not tell what software
they are running. Thus, it is possible that (e.g.) a mail server
running Postfix is listed under "Unknown / Other" because
it does not tell that it is running Postfix.
select a Mail Server Survey above!
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