Difference between revisions of "Email client protocols and port numbers"
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The port numbers you set determine the protocol your email client uses. There are four basic options. IMAP secure is the recommended configuration: | The port numbers you set determine the protocol your email client uses. There are four basic options. IMAP secure is the recommended configuration: | ||
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IMAP | Port 143 (Insecure Transport - No SSL function enabled) | IMAP | Port 143 (Insecure Transport - No SSL function enabled) | ||
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IMAP | Port 993 (Secure Transport - SSL function enabled) | IMAP | Port 993 (Secure Transport - SSL function enabled) | ||
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POP3 | Port 110 (Insecure Transport - No SSL function enabled) | POP3 | Port 110 (Insecure Transport - No SSL function enabled) | ||
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POP3 | Port 995 (Secure Transport - SSL function enabled) | POP3 | Port 995 (Secure Transport - SSL function enabled) | ||
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SMTP | Port 587 (Insecure Transport - No SSL function enabled) | SMTP | Port 587 (Insecure Transport - No SSL function enabled) | ||
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SMTP | Port 465 (Secure Transport - SSL function enabled) | SMTP | Port 465 (Secure Transport - SSL function enabled) | ||
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SMTP | Port 25 (username/password authentication MUST also be enabled!) | SMTP | Port 25 (username/password authentication MUST also be enabled!) | ||
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[[Category: Email]] | [[Category: Email]] | ||
[[Category: Email Servers]] | [[Category: Email Servers]] | ||
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Latest revision as of 18:05, 8 July 2017
The port numbers you set determine the protocol your email client uses. There are four basic options. IMAP secure is the recommended configuration:
- IMAP (insecure)
- IMAP (secure)
- POP3 (insecure)
- POP3 (secure)
Below are the settings you can use for each protocol along with the security settings.
Incoming
IMAP | Port 143 (Insecure Transport - No SSL function enabled)
IMAP | Port 993 (Secure Transport - SSL function enabled)
POP3 | Port 110 (Insecure Transport - No SSL function enabled)
POP3 | Port 995 (Secure Transport - SSL function enabled)
Outgoing
SMTP | Port 587 (Insecure Transport - No SSL function enabled)
SMTP | Port 465 (Secure Transport - SSL function enabled)
SMTP | Port 25 (username/password authentication MUST also be enabled!)
Port 587 is a highly recommended alternative port because port 25 is often blocked by ISPs.
