SMTP Error 0x800CCC60

Last modified: April 13, 2020
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The SMTP server returned an error –>

Account: ‘accountname’,

Server: ‘’,

Protocol: SMTP,

Server Response: ‘rblsmtpd: pid 11559: 451 Blocklist Removal Center‘,

Port: 25, Secure(SSL): No,

Error Number: 0x800CCC60

Root Cause:

Your server is as of now under ‘OPEN RELAY’. This implies your server being utilized by spammers to convey spam messages.

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