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Callback verification, also known as callout verification or Sender Address Verification, is a technique used by SMTP software in order to validate e-mail addresses. The most common target of verification is the sender address from the message envelope (the address specified during the SMTP dialogue as " MAIL FROM ").
In November 1995, RFC 1869 defined Extended Simple Mail Transfer Protocol (ESMTP), which established a general structure for all existing and future extensions which aimed to add-in the features missing from the original SMTP. ESMTP defines consistent and manageable means by which ESMTP clients and servers can be identified and servers can ...
The envelope-from address is transmitted at the beginning of the SMTP dialog. If the server rejects the domain, the unauthorized client should receive a rejection message, and if that client was a relaying message transfer agent (MTA), a bounce message to the original envelope-from address may be generated.
Server Settings Port Settings Incoming mail server (POP3): pop.verizon.net Outgoing mail server (SMTP): smtp.verizon.net POP3-995-SSL SMTP-465-SSL
Server Settings Port Settings Incoming mail server (IMAP): imap.aol.com Outgoing mail server (SMTP): smtp.verizon.net IMAP-993-SSL SMTP-465-SSL
Settings may be in a different location in each email client, though the AOL server and port settings will always be the same. For additional questions specific to the email client, check the manufacturer’s website. Manufacturers cannot answer questions about your AOL Mail settings, or your AOL username or password.
This is a list of Simple Mail Transfer Protocol (SMTP) response status codes. Status codes are issued by a server in response to a client's request made to the server. Unless otherwise stated, all status codes described here is part of the current SMTP standard, RFC 5321. The message phrases shown are typical, but any human-readable alternative ...
Settings may be in a different location in each email client, though the Verizon server and port settings will always be the same. For additional questions specific to the email client, check the manufacturer’s website. Manufacturers cannot answer questions about your Verizon.net AOL Mail settings, or your username or password.