domain name
Every time your web browser wants to load a web page, it needs to contact a DNS server first, which will translate thewww.domain.com address into a machine readable format – the IP address. The same thing happens when PostCast Server tries to send a message to a recipient. The domain name in the e-mail address is [...]
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This step is for hosts, which are most likely your internal servers that would need to send to all domains on the Internet. It is not recommended to not have any restrictions because anyone can use your server as an open relay. It is recommended to only allow the minimum, necessary hosts to openly relay [...]
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Depending on the scenario, it may be necessary to configure the SMTP service to relay inbound messages for your internal domains. Click Start, point to Programs, click Administrative Tools, and then click Internet Services Manager. Expand the tree under the server name, and then expand the Default SMTP Virtual Server. By default, you should have a Local (Default) domain [...]
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Everyone has a “www” subdomain (In “www.yourdomain.com”, the “www” part is the subdomain). The www subdomain is created by, and serves files from, your /htdocs/www directory on the filesystem.
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Black Lists are used in the context of email to define the IP addresses or netblocks of well known sources of SPAM. DNSBL defines a method of using standard DNS zone files to store such IP addresses. Standard DNS A RR queries are used to interrogate the black list which is organised as a reverse [...]
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