Outgoing SMTP mail not working

If you have all the settings correct to use QTH.com's SMTP (outgoing) mail server, then perhaps your ISP is blocking you. Sometimes Internet Providers block customers from using other SMTP servers as a way to control spam and viruses.

Assuming you are using Windows, you can test whether port 25 is blocked or not by clicking on START, then click RUN, then clear whatever comes up in the box, and type:

telnet mail.qth.com 25

And press Enter. (Windows 7 and Vista users may need to enable telnet first)

If they are not blocking SMTP (port 25) then you will see something like:

Connecting to mail.qth.com....

220-www12.qth.com ESMTP Exim 4.50 #1 Sun, 03 Jul 2005 15:51:33 -0500
220-We do not authorize the use of this system to transport unsolicited,
220 and/or bulk e-mail.

However, if they are blocking port 25, it will probably just hang. See below for a work-around, if your ISP is blocking port 25.

Also remember that QTH.com requires SMTP Authentication... meaning that in order to use our outgoing server you have to "check a box" or otherwise tell your e-mail program to use "SMTP Authentication". Your authentication information is the same as your POP3 information (same username and password for checking mail as for sending).

Here are instructions for configuring SMTP Authentication in a few different email clients:
Does your ISP (or employer) blocks port 25 SMTP? If so, you have a few options for still getting your e-mails sent.

  • If you can change the port number in your e-mail client, you can change it to port 9999, as I have an SMTP server running on that port number. Port 587 should also work.

  • Another option is to enable SSL/Secure SMTP which is running on port 465 (the default port for secure smtp).
Any questions, please let us know.
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