Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

Email won't send

more options

Lately, I have been receiving error message "Sending of the message failed. The message could not be sent because the connection to Outgoing Server (SMTP) mail.iinet.net.au timed out. Try again." I have checked the settings and they are correct. The message will send using iinet webmail, but not with Thunderbird, so the problem appears to be with Thunderbird. These are usually emails with an attachment (even small). The sending of the email stalls aroung 35%, before the message appears. I am using version 102.13.0 (64 bit). I am using Windows 10 with ESET Security. Tried sending with without ESET protection which made no difference. Can you please help?

Lately, I have been receiving error message "Sending of the message failed. The message could not be sent because the connection to Outgoing Server (SMTP) mail.iinet.net.au timed out. Try again." I have checked the settings and they are correct. The message will send using iinet webmail, but not with Thunderbird, so the problem appears to be with Thunderbird. These are usually emails with an attachment (even small). The sending of the email stalls aroung 35%, before the message appears. I am using version 102.13.0 (64 bit). I am using Windows 10 with ESET Security. Tried sending with without ESET protection which made no difference. Can you please help?

All Replies (2)

more options

Try to start Windows 10 in safe mode with networking enabled. Does the problem go away?

Windows safe mode disables anti-virus software. This is a troubleshooting step, not a solution.

Beyond that, see https://support.mozilla.org/kb/cannot-send-messages

Modified by christ1

more options

Thanks - I will try that if the problem persists