I can send email using my local Outlook Express, but I can not send email using it. It is ok to send through webmail though. Below is the error message from my outlook:

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An unknown error has occurred. Subject 'Re: email', Account: 'mail.myOWNdomain.com', Server: 'mail.myOWNdomain.com', Protocol: SMTP, Port: 25, Secure(SSL): No, Error Number: 0x800CCC0B
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The email account worked ok until recently. I havn't changed anything to the server.

Can somebody tell me what happened?

Thank you.

WFQ2

Ask your host to troubleshoot for you. They would have access to the logs and can see the exact error you hit on the server side and help you resolve them.

they have no idea with this. too sad

for the snmp server.... have them use their ISPs...

hi,

What do you mean? can you please explain more specific?

Thanks

Instead of mail.myOWNdomain.com, try and just use myOWNdomain.com

I am not sure if this will work, but it is worth a shot. I just use my domain for incoming and outgoing mail with Outlook and it works.

Your ISP has a SMTP server. Look up the address and use that as your outgoing server.
However your host should sort this issue out for you. Is it a problem they can replicate? Or is it related to you? They should be able to answer at least those questions for you.
Just my $0.02 ....

Originally posted by wfq2
they have no idea with this. too sad

It's not a very good sign when they can't even help you with such trivial problems.

They replyed me with the following:
But if they are right, how come most of the mail accounts work fine with Outlook while some of them are not working to sent mails? and besides, those nonworking email accounts did work before...............

---------------------------------------------
First
-------
Are you sure you have SMTP authentication passwords turned on (i.e. set
Outlook to use a secure connection with a password in the outgoing
server section of your Outlook configuration)?

Also, some ISPs have recently tightened their regulations on allowing
users to send mail using off-network (i.e off the ISP's network) SMTP
(outgoing) mail servers. Who is your ISP? It's possible they don't allow
outgoing mail to be sent via customers' personal mail servers anymore.
Many ISPs have cracked down on this lately to stop spamming.
============================

-------------------------------------------------------------------
Second
------------
When you login to the accounts that don't work from a webmail interface
(i.e., not from Outloook) can you send mail then? If so, it would
indicate that the problem lies either with Outlook and its config somehow,
or with your local ISP, and not with the mail server itself.

Do you have a test account set up that perhaps I can experiment with a
bit? I don't have Outlook here and I'm not on a Windows machine, so I
can't do much in the way of troubleshooting that side of things, but I
want to at least eliminate the possibility that the problem is with the
server.

I'm still guessing it may be that your local ISP is now requiring that
your outgoing mail from local, desktop e-mail programs on their network
be sent through THEIR outgoing SMTP servers. If this *is* the case,
you'll have to contact whomever is your ISP and ask them what to use as an
outgoing SMTP server.
--------------------------------------------

Sounds to me like your ISP just started blocking your access to remote SMTP servers. I don't know of a single ISP that has implemented this change and actually let their users know before hand, or even afterward.

You are going to have to use your ISPs SMTP servers from now on.

I am also faced with similar problems and I have found on CPanel and Ev1 forums that CPanel have problems with sending mail from Windows XP Outlook.
I am personally using Windows 2000 with Office XP, so from my desktop computer I can sent mail only after multiple retiries, but I can do this. And before this when I was using Office 2000, I had no such problems.

Well i know in canada Bell doesn't allow anyone to connect to remote smtp servers from their netowkr. (they block port 25.)

What I've done is assign another port xxxx for smtp. Cpanel has that function.

Go into WHM (root) and than click on "Service Manager" and check "exim on another port" set it to 26 and save, than go into Outlook Express, go into the account properties of which you're trying to send the email from, and than advanced tab, change the port from 25 to 26, and save, than try sending email again.

I was having the same problem as you until I did that, because my ISP blocks port 25 from sending emails or something in that sort. ;)

yes it seems to me that your isp started to block the port25.Please request to them to open it .Most of the ISp do not other mail servers to replay through them.So they will block it.So i would suggest you to use your ISP's IP as the smtp mail server

Please follow these steps

To configure Microsoft Outlook to receive email, follow these steps:
Open Outlook , click on Tools and then choose Accounts.
Click on the Mail tab and then click on Add --> Mail.
Under Display name, type in the name that you would like to appear in the from field of your outgoing messages. Click Next. Enter the full address of your email account. For example, youremail@yourdomain.com
Click Next.
In "My incoming mail server is a" field, leave POP3. In the "Incoming mail (POP3 or IMAP) server" field enter yourdomain.com. For example, if your domain is abc.com enter abc.com (do not enter www.yourdomain.com or mail.yourdomain.com) In the "Outgoing mail (SMTP) server" field enter your local ISP SMTP server. For example, mail.yourISP.com or yourdomain.com, for example, if your domain is abc.com enter abc.com (do not enter www.yourdomain.com or mail.yourdomain.com)
Click Next.
In the "Account name" field enter your hosting account username if you want to check the email for the "default email account", or enter the full email
address of an email account you created in your control panel (See Email Options.) In the "Password" field enter the password.
Click Next.
Choose the connection type to the Internet. If you have a modem, check "Connect using my phone line." If you are connected to a network or to the Internet with Cable Modem or DSL, check "Connect using my local area network (LAN)." If you want to connect manually each time, choose the last option.
Click Next.
Click Finish. Your Outlook email configuration is now complete.


regards
Blessen
Head of installation team and Security department (bobcares )
Note: for any expert advice contact blessen@blessen.com (its free)

If I change the smtp port in cpanel to 26, do I need to manually change the port to 26 when I configurate my outlook express each time when I add an mail account to outlook?

I thought I posted a link to some of the known ISPs that blocks port 25 from external servers... must be deleted by some overzealous mod...

Here's it quoted for information:

Some ISPs had recently started blocking port 25 as a countermeasure against spamming via their networks. At present moment, some of the ISPs doing so that we are aware of includes Bellsouth, Earthlink, Mindspring, Verizon, Mediaone, MSN, Cox Communications, Flashnet, Netzero, AT&T, People PC, Verio, Comcast/ATTBI, well as most dialup ISPs.

yes..you will have to use port 26 for smtp in your outlook express


<<< Signatures need to be set up in your profile. >>>

Originally posted by sprintserve
I thought I posted a link to some of the known ISPs that blocks port 25 from external servers... must be deleted by some overzealous mod...

Here's it quoted for information:

Some ISPs had recently started blocking port 25 as a countermeasure against spamming via their networks. At present moment, some of the ISPs doing so that we are aware of includes Bellsouth, Earthlink, Mindspring, Verizon, Mediaone, MSN, Cox Communications, Flashnet, Netzero, AT&T, People PC, Verio, Comcast/ATTBI, well as most dialup ISPs.

I don't agree with this at ALL! If my ISP block my SMTP, how comee I can still send email with another email address, which is in the same server with the email address that can not send!

Well, you didn't mention it at all in the whole thread, and we can't guess what's the exact situation. Unfortunately we aren't mind-readers.

If that's the case, you should go back to your host for a solution and if they can't deliver it, you can consider a move.

What can I do now?