Email Error: SMTP Error: The following recipients failed: Help :)

[Laidlawgifts]

I am getting an error when trying to send an email to a customer as a test during setup.

1. E-Mail Transport Method smtpauth
2. SMTP Email Account Mailbox [email protected]
3. SMTP Email Mail Host mail.laidlawgifts.com
4.SMTP Email Mail Server Port 26

Email Error: SMTP Error: The following recipients failed: (my personal email account as a test)

So... any idea what I need to fix?
I did try smtp instead of smtpauth but same error.
I confirmed the email host and port.

Help

[DrByte]

Did you set an SMTPAUTH password?

[Laidlawgifts]

Oh I forgot that line.. lol
Yes

SMTP Email Account Password ***********

I assume you mean that one?

[DrByte]

Okay, as long as you've set the actual password for that mailbox in there.

Where is this website server sitting? Is it on your home computer? Or at a hosting company? (which one?)

[Laidlawgifts]

It is a hosting company called hostbig.com

[DrByte]

What port number do you use when you set up those same SMTP credentials in your own email client (ie: Outlook, or Thunderbird, for example)?
Has your hosting company instructed you to use a particular port number? 25 is the normal outgoing email port. Sometimes other ports, such as 26, are enabled in case 25 is blocked for spam-prevention reasons (a common practice with home internet providers ... which is partly why I asked if you were hosting from home).