When configuring a company's network firewall, which port should be open to ensure that employees can access their email via the Internet Mail Access Protocol (IMAP)?
The IMAP (Internet Message Access Protocol) protocol uses port 143 by default. IMAP over SSL uses port 993, but this is not on the CompTIA A+ objectives.
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What is IMAP and why is it important for email access?
What is the difference between IMAP and SMTP?
What are the differences between the IMAP ports 143 and 993?