Outlook Express SMTP Error Number: 0x800CCC67

IP4IT Staff
IP4IT Staff used Ask the Experts™
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Hello,

I am using Outlook Express and trying to send emails.
I am getting this error.

An unknown error has occurred. Account: 'Scoil Eimear', Server: 'scanner.scoilnet.ie', Protocol: SMTP, Server Response: '421 4.7.0 Not allowed.', Port: 25, Secure(SSL): No, Server Error: 421, Error Number: 0x800CCC67

Regards,
Daniel.
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JohnBusiness Consultant (Owner)
Most Valuable Expert 2012
Expert of the Year 2018

Commented:
Take a look in the Advanced Settings for the Outlook Express email account.

Old settings were port 110 to receive, port 25 to send.

New port settings might be 995 SSL to receive, 587 (or 465) SSL or TLS to send. You need to get these settings from your email supplier.

Also look at Outgoing Authentication (also in Advanced Settings). You may need to provide an email address to authenticate the send.

.... Thinkpads_User

Author

Commented:
The ports and all that are setup correctly according to the the server owner.
JohnBusiness Consultant (Owner)
Most Valuable Expert 2012
Expert of the Year 2018

Commented:
Port 25 does not normally use SSL which is what made me think along these lines.

There is not much you can do with OE in XP. I don't think you can reinstall it.

Is it feasible to use Outlook or Thunderbird?

... Thinkpads_User
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Author

Commented:
SSL is not enabled for my outgoing server
JohnBusiness Consultant (Owner)
Most Valuable Expert 2012
Expert of the Year 2018

Commented:
OE is long out of support and XP is essentially dead. So if OE does not work, you need to try a more modern email client (Outlook or Thunderbird as noted).

.... Thinkpads_User

Author

Commented:
Do you think the problem is with the computer or the email server?
Business Consultant (Owner)
Most Valuable Expert 2012
Expert of the Year 2018
Commented:
Port: 25, Secure(SSL): No, Server Error: 421, Error Number: 0x800CCC67

I would call your ISP. I do not have any suppliers left still using Port 25 to send. It is unsafe.  Your email supplier could have changed things and it is hard to say.

Collect up your Outgoing Authentication, Receiving Port and Sending Port. Call them and verify what you are using.

.... Thinkpads_User
Jackie Man IT Manager
Top Expert 2010

Commented:
The problem could be your mail service provider thinking that your computer is sending SPAM via their SMTP server and subsequently intermittently block your access to the mail server.

In short, it could be a virus issue.
JohnBusiness Consultant (Owner)
Most Valuable Expert 2012
Expert of the Year 2018

Commented:
@robbiebreslin - Any feedback?  Outlook Express is not repairable (so far as I know), so if you are still having issues with it and you think it is Outlook Express, you may have to rebuild your XP system.   ... Thinkpads_User
JohnBusiness Consultant (Owner)
Most Valuable Expert 2012
Expert of the Year 2018

Commented:
@robbiebreslin  - Thanks for following up.  

... Thinkpads_User

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