While working on Mozilla Thunderbird, users are able to receive their emails but unable to send that mail, it prompts an error message saying ‘Try again.’ It is Thunderbird SMTP Server Error- Messages cannot send.
If a user is unable to send any mail via Mozilla Thunderbird then, it is just due to SMTP server error. SMTP server manages the whole email delivery process. An error comes up due to as the ISP blocks the outgoing ports as a guard against the connections, which are utilized to spend spam. This error can occur with various statements.
Method 1: Check Mail Outing Settings
Main cause of Messages Cannot Send error is due to disturbed SMTP settings. Therefore, it is important to inspect outgoing server settings as mentioned:
Once it is done then, check the correct SMTP setting is updated or not by following the given steps:
Method 2: Check for Blocking Services
Most of the time, antivirus and firewall application blocks the pouting messages of Thunderbird. Therefore, it is important to check it:
Method 3: Delete SMTP Password
An email sending problem can be solved by deleting and reconfiguring Thunderbird email account. :
Once the mail is send then, you can reset your SMTP password if you want to be secured.
SMTP problem can occur anytime and on any email client. Similar as in case of Mozilla Thunderbird, which pop-ups “Thunderbird SMTP Error – Messages Cannot Send.” Therefore, we have suggested all the common fixes to remove this error message.