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When a mail server receives a connection from a client, and wishes to check that client against a DNSBL ( let's say, dnsbl. example. net ), it does more or less the following:
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When and mail
When Governor Al Smith offered New York National Guard planes to fly the mail in and out of the state, it seemed a likely temporary solution, easing Burlington's bottleneck and that at Montpelier too.
* When using computer files or the Internet, often shortened to " e -" as in e-mail for electronic mail, or prefix " e " as in eCommerce for electronic commerce.
When the data values are long ( or variable-length ) character strings — such as personal names, web page addresses, or mail messages — their distribution is usually very uneven, with complicated dependencies.
When a postmaster is responsible for an entire mail distribution organization ( usually sponsored by a national government ), the title of Postmaster General is commonly used.
When the client exits the session, the mail marked for deletion is removed from the maildrop.
When the post office began handling parcel post in 1913, terminal Railway Post Office operations were established in major cities by the RMS, in order to handle the large increase in mail volume.
When doing so, each starter instructed their recipient to mail the folder ahead to one of the latter's first-name acquaintances with the same instructions, with the hope that their acquaintance might by some chance know the target recipient.
When online it will attempt to connect to mail servers ( to check for new mail at regular intervals, for example ), and when offline it will not attempt to make any such connection.
When sending mail, users can only control encryption at the first hop from a client to its configured outgoing mail server.
When receiving traffic addressed to this user, the server software consults that list, and forwards the mail to the original sender, thus permitting anonymous — though traceable with access to the list — two way communication.
When the mail user agent process finds messages in the directory it moves them to ( using-link then unlink strategy may result in having the message duplicated ) and appends an informational suffix to the filename before reading them.
When an e-mail message is sent through the Internet, the sending mail transfer agent queries the Domain Name System for MX records of each recipient's domain name.
When a remote client ( typically another mail server ) does an MX lookup for the domain name, it gets a list of servers and their preference numbers.
When determining which server of equal preference to send mail to, " the sender-SMTP MUST randomize them to spread the load across multiple mail exchangers for a specific organization ", unless there is a clear reason to favor one.
When subsequently read by the mail software, the leading is erroneously removed.
When President Ronald Reagan was an actor during the 1940s, he had his mother sign his name to much of his fan mail.
When Linus goes out to mail the letter but cannot reach the mailbox, Lucy refuses to help him ; so he uses his blanket to open the box, and throws the letter in.
When so combined ( and sometimes, less strictly speaking, even when not so ) the artistamp may be considered part of the mail art genre.
When Gertrude Berg missed a couple of weeks due to illness, stations carrying the popular show were flooded with get-well mail.
When first published, qmail was the first security-aware mail transport agent ; since then, other security-aware MTAs have been published.
When it was released, qmail was significantly faster than Sendmail, particularly for bulk mail tasks such as mailing list servers.
When and server
When the server serves, the shuttlecock must pass over the short service line on the opponents ' court or it will count as a fault.
When domain names are registered with a domain name registrar, their installation at the domain registry of a top level domain requires the assignment of a primary name server and at least one secondary name server.
When data is replicated between database servers, so that the information remains consistent throughout the database system and users cannot tell or even know which server in the DBMS they are using, the system is said to exhibit replication transparency.
When it receives a request from a client, the DHCP server determines the network to which the DHCP client is connected, and then allocates an IP address or prefix that is appropriate for the client, and sends configuration information appropriate for that client.
When a DHCP-configured client ( a computer or any other network-aware device ) connects to a network, the DHCP client sends a broadcast query requesting necessary information to a DHCP server.
When a DHCP server receives an IP lease request from a client, it reserves an IP address for the client and extends an IP lease offer by sending a DHCPOFFER message to the client.
When the DHCP server receives the DHCPREQUEST message from the client, the configuration process enters its final phase.
When using POP, clients typically connect to the e-mail server briefly, only as long as it takes to download new messages.
When an LDAP session is created, that is, when an LDAP client connects to the server, the authentication state of the session
When users visit a website ( using " user agent " software such as a web browser ), a text string is generally sent to identify the user agent to the web server.
When a user posts to one news server, the message is stored locally.
When a private key used for certificate creation higher in the PKI server hierarchy is compromised, or accidentally disclosed, then a " man-in-the-middle attack " is possible, making any subordinate certificate wholly insecure.
: When sent from client to server, ANNOUNCE posts the description of a presentation or media object identified by the request URL to a server.
When sent from server to client, ANNOUNCE updates the session description in real-time.
When the server serves data in a commonly used manner, for example according to the HTTP or FTP protocols, users may have their choice of a number of client programs ( most modern web browsers can request and receive data using both of those protocols ).
When designing using dynamic web-based scripting technics, like classic ASP or PHP, developers must have a keen understanding of the logical, temporal, and physical separation between the client and the server.
When the receiver is ready, the server will serve, although the receiver must play to the pace of the server.
When the first server is chosen in the second or the latter games of the match, the first receiver of the game is the player who served to the first server of the game in the preceding game.
When a web server is near to or over its limits, it becomes unresponsive.
When communicating via HTTP, a server is required to respond to a request, such as a web browser's request for a web page, with a numeric response code and an optional, mandatory, or disallowed ( based upon the status code ) message.
When pressed for solutions with network connectivity, many chose the option requiring less efforts: addition of a terminal server, a device that converts serial data for transmission via LAN or WAN.
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