SMTP Migrane

[cptmjcooper]

I'm trying to use this site as an SMTP host for a VB.NET application, but no matter what I've tried, I keep getting told that "No connection could be made because the target machine actively refused it."

I'm using "mail.cptmjcooper.x10hosting.com" as my server (which matches what cPanel tells me), and this resolves to the same IP that the VB application gives me, so that's not likely the issue. I'm also using part 25 which seems to be right.

The username (taken straight from cPanel) is "cptmjcooper+cptmjcooper.x10hosting.com", and the password is the password that I set for that mail account.

I've poured through my account settings and I've got no active filters or any sort of security setting that should be interferring with a connection.

Does anyone have any ideas?

[Hue Kares]

Hi there, I have one idea for you...

Are you aware that some (most) ISPs block Port 25 (one of their solutions to reduce spam apparently). This means you maybe unable to send email from your computer using any other smtp that requires Port 25.

For example, let's assume your x10 smtp credentials are correct (you sound like you've checked and checked again, and they look fine to me). So, (ignoring your application for now) set up a new email account in Outllook or Thunderbird (other email programs are available!) with your x10hosting mail account settings.

All being well, you should be able to receive emails for this account, but can you send them? If not, you should now change the smtp server to the one provided by your Internet Service Provider, which should then successfully sent the email for this account.

As for a solution; I'm not sure how you'd get around this port problem, and when I say I'm not sure, I really mean I have no idea! I guess Google is your friend here... Also, if you care to expand a bit on what your app is doing (for example, do you need to send email from this specific account), I may be able to help further.

That's all I have for you; hope it helps. ;)

[moiety]

You're not using SSL are you? 'Cause that's port 465. Hue Kares (good name!) could be right- your ISP could be hoovering up port 25 to stop spammers. If your VB app can cope, it's best to smtp on a custom port...mail clients can handle that.

Or if you're on a shared cache-ing proxy from your ISP, someone else could have been spamming from your IP range; which would then be blackholed for direct SMTP connections. There's really no cure for that except for customising your app, or tunneling your email to somewhere that's not blacklisted.

[edwing2009]

is nice