if (mail.getSender() == null) {
return null;
}
String domain = mail.getSender().getHost();
//DNS Lookup for this domain
Collection servers = getMailetContext().getMailServers(domain);
if (servers.size() == 0) {
//No records...could not deliver to this domain, so matches criteria.
log("No MX, A, or CNAME record found for domain: " + domain);
return mail.getRecipients();
} else if (matchNetwork(servers.iterator().next().toString())){
/*
* It could be a wildcard address like these:
*
* 64.55.105.9/32 # Allegiance Telecom Companies Worldwide (.nu)
* 64.94.110.11/32 # VeriSign (.com .net)
* 194.205.62.122/32 # Network Information Center - Ascension Island (.ac)
* 194.205.62.62/32 # Internet Computer Bureau (.sh)
* 195.7.77.20/32 # Fredrik Reutersward Data (.museum)
* 206.253.214.102/32 # Internap Network Services (.cc)
* 212.181.91.6/32 # .NU Domain Ltd. (.nu)
* 219.88.106.80/32 # Telecom Online Solutions (.cx)
* 194.205.62.42/32 # Internet Computer Bureau (.tm)
* 216.35.187.246/32 # Cable & Wireless (.ws)
* 203.119.4.6/32 # .PH TLD (.ph)
*
*/
log("Banned IP found for domain: " + domain);
log(" --> :" + servers.iterator().next().toString());
return mail.getRecipients();
} else {
// Some servers were found... the domain is not fake.
return null;
}
