Outlook Express SMTP Error Number: 0x800CCC67


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

IP4IT StaffAsked:
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JohnBusiness Consultant (Owner)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
IP4IT StaffAuthor Commented:
The ports and all that are setup correctly according to the the server owner.
JohnBusiness Consultant (Owner)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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IP4IT StaffAuthor Commented:
SSL is not enabled for my outgoing server
JohnBusiness Consultant (Owner)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
IP4IT StaffAuthor Commented:
Do you think the problem is with the computer or the email server?
JohnBusiness Consultant (Owner)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

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Jackie ManCommented:
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)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)Commented:
@robbiebreslin  - Thanks for following up.  

... Thinkpads_User
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