Thunderbird via Roadrunner not delivering emails to certain Verizon accts for up to 8 hours.
Thunderbird via Roadrunner email acct is not delivering emails for up to 8 hours to certain Verizon accounts. What is up with this? It is very difficult to monitor a very sick brother in another state when emails are not being delivered in a timely manner. Have spoken with Spectrum/Roadrunner and sent message directly from Spectrum's web email app per their troubleshooting hotline. No joy on the email deliver either via Spectrum or Thunderbird.
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Once Thunderbird sends message to the SMTP server, it's no longer a Thunderbird issue. From there on, the message relies on the email provider's server to deliver the message