Webmin - External server for notification emails

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#1 Sat, 07/13/2013 - 08:48

Webmin - External server for notification emails

I'm sure I'm missing something really simple here, but I have been banging my head against the wall for a few hours already.

Under 'Webmin' -> 'Webmin Configuration' -> 'Sending Emails' I am trying to configure webmin to use the following setting: "Send email using Via SMTP to remote mail server". I have entered the server I want to use 'smtp.example.com' but I need it to use a custom port (123) and not 25.

I have tried entering: 'smtp.example.com:123' and some other variations but just get the error "Missing or un-resolvable SMTP server hostname". If someone could show me the correct formatting it would be really appreciated.


Sun, 07/14/2013 - 15:24


Jamie says that this is a missing feature on the Sending Mail page - you can't yet set the SMTP port.

However, it can be changed by editing the file /etc/webmin/mailboxes/config and adding the line :


He will make it possible to set this via the UI in the next release of Webmin.


Sun, 07/21/2013 - 10:15 (Reply to #2)

Hi Eric,

Thanks for responding. I have added the line to the /etc/webmin/mailboxes/config file as suggested. It seems to have fixed the initial error. However I am now getting another error:

"Send Test Email

Sending message from xxx@yyy.com to aaa@bbb.com .. .. sending failed : SMTP command failed : . "

I'm guessing it is because the SMTP server requires SSL. Is there another line I can add to the config to enable this?

I know I have the firewall open to allow the connection, as one of my hosted sites already uses the same credentials to send emails.

Sun, 02/14/2016 - 08:32

Sending message from fuuuu@barrrrrr.de to baaaaar@fuuuuu.de .. .. sending failed : SMTP command mail from: fuuuu@barrrrrr.de failed : 530 5.7.57 SMTP; Client was not authenticated to send anonymous mail during MAIL FROM , line 4.

Need TLS

Fri, 04/22/2016 - 16:46 (Reply to #4)

Yes, TLS is needed.

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