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Issue with SMTP from Thunderbird
I get the following error when trying to send email from Thunderbird using my Spectrum email account (from the cfl.rr.com domain); this started yesterday. I called and spoke to 2 different Spectrum support people who did not seem to understand what the problem is.
An error occurred while sending mail: The mail server sent an incorrect greeting: p-impout006.msg.pkvw.co.charter.net cmsmtp 94.198.xx.xx blocked. Please see https://www.spectrum.net/support/internet/understanding-email-error-codes for more information. AUP#Out-1130.
I looked up the error code and it states that the IP address I'm sending from has an issue with DNS; the IP address I'm using is a Spectrum IP address and I'm not using a VPN. It also states that if the IP address is a Spectrum-provided email address to contact support. Well I contacted support and they don't have a clue what's wrong. Clearly this is an issue on the Spectrum side.