Problem with outgoing mail.

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Nov 4, 2009
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Hi guys.
When I create an account with e-mail Outlook Express I enter the following data:
my username - [email protected]
my password
POP3 server - mail.mysite.com
SMTP server - i must to enter my ISP's server - wath is it?
 
Many ISPs block port 25 outgoing off their network. You may be able to use port 587 with authentication.

Jeff
 
Hi Jeff,

On my laptop (hotel travel) I have the outgoing mail server (SMTP) set to port 587, which doesn't work now that I have migrated to a server using DA. I suspect there's a config file somewhere that is blocking port 587.

Port 25 works ok, where its not blocked.

I'm still learning my way around.

Thanks.
 
Edit your exim.conf

Look for
Code: 
daemon_smtp_ports = 25

Change to
Code: 
daemon_smtp_ports = 25 : 587

Also if the server is running a firewall you'll need to make sure port 587 is open on that as well.
 
I looked at exim.conf. The line is already set at:

Code: 
daemon_smtp_ports = 25 : 587

Not a firewall issue either. I don't think, anyway.

Thanks. Any other suggestions.
 
I found the problem. It WAS with authentication.

The previous outgoing mail server did NOT require authentication on any port. Now the new outgoing mail server requires authentication on port 587, but NOT port 25.

I didn't know that ports behaved differently. Curious, eh?

Thanks for your time.
 
Nope; not curious at all, at least not to me; I wrote it. What's curious to me is that you say your outgoing mail server didn't require authentication on port 25. It should. Please verify.

Jeff
 
Hi Jeff,

Thanks for the reply. What I found curious was that port 587 required/requires authentication while port 25 does not.

My presumption is that checking mail via pop/imap authenticates the user on port 25.

The details in MS Outlook 2007; Tools --> Account Settings. Select the account and select Change..., then More Settings tab --> Outgoing Server.

The box for "My outgoing mail server(SMTP) requires authentication" is NOT checked.

Hope this helps?
 
Those are two different forms of verification. Port 587 does a different check for authentication; I haven't studied it, but rather got it from the exim.org website some time ago. Since it's working for so many of us, I'm not going to play with it now.

Jeff
 
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