In some point of time, users of Mozilla Thunderbird email client may have encountered issues while sending messages. The main reason for not being able to send a message is connection problems with SMTP Server. SMTP (Simple Mail Transfer Protocol) is part of TCP/IP protocol that moves the email on and across the network, delivering it to right destination inbox. In this article, we will check common problems on how to fix Thunderbird SMTP Server Error.
In order to troubleshoot SMTP Server issues in Thunderbird, following points should be verified:
1. Check SMTP outgoing email settings
For checking SMTP Outgoing email settings, we will perform the following actions:
2. Ensure that correct SMTP is being used
It is necessary to verify that the correct SMTP is being used for successful delivery of a message. We can check by performing steps below:
3. Check if the outgoing email is not blocked
The Outgoing email should not be blocked in any way by Firewall, antivirus application or Internet Service Provider. To ensure this, we can check the following:
4. Delete the password of SMTP
If any of the above options does not make the user send the message from their Thunderbird account, user can delete the password for that email account by following steps below:
5. Set a new password for SMTP
After deleting the password, user can re-set the new password for the SMTP. This is done using ‘Reset email password’ form on the ISP support website.
6. Other Alternatives
If the problem persists, create a new support request providing all the details like screenshots of SMTP settings, mail provider information, ISP, etc. Information such as firewall version being used, Antivirus software with version, OS on which user is working, Thunderbird version can be submitted to ask for solution.
Most of the users of Thunderbird account have encountered problems when their email messages are not being sent to the desired recipient. It is mainly because of SMTP Server issues. The article has discussed various points that will check the common problems related to SMTP error. Any user can refer this article if they ever wonder ‘How to fix Thunderbird SMTP Server error’ with the steps given and can check File Converter.