Topic: Cannot send or receive mail from Yahoo

[radbrad]

I guess I am still confused.

I thought incomming mail came to my SME server via port 110.

I am not receiving mail. Mail is returned saying no response from my email server.

I thought sending mail from my server went out via port 25.

I can send mail (via my ISP's outgoing mail server) fine.

Seems to me this is a port 110 problem.

Radbrad [/b]

[bpivk]

Yes you are confused. And what's worse? You're starting to confuse me.  

Let's go from page 1.

Your port (25) is closed so you can only send mail trough your ISP's mailserver.

Your port (110) is also closed. So you can't receive mail.

So to conclude:
1.)You have closed ports 25 and 110 so you can't send OR receive mail from your server.
2.)It IS a port problem, but the problem is with your ISP who closed all your ports.
3.)Solution is to change your ISP.

If you want to check which ports are open try this http://www.grc.com/x/ne.dll?rh1dkyd2 this webpage will show all your open ports.

[raem]

radbrad

> I guess I am still confused.

Try this
http://www.no-ip.com/support/guides/email/blocked_port_25.html

[bpivk]

I think that his ISP blocks all common ports (our isp in slovenia does the same but we can choose unsafe package - open ports or safe package - closed ports).

[raem]

radbrad

> I thought incoming mail came to my SME server via port 110.
> I thought sending mail from my server went out via port 25.

You are confusing mail server to mail server communication with email client to mail server communication.

Your sme servers "mail server" communicates with other external "mail servers" using smtp (protocol) on port 25 for incoming & outgoing messages

If you wish to run your own mail server then you need to use an ISP who does not block port 25 inbound & outbound.
Alternatively use a external port redirector service to circumvent inbound blocking combined with using your ISPs server to send email, refer to the setting in Email panel.

Email clients eg Outlook Express, Thunderbird etc communicate with ANY mail server (including your own local sme server or other external servers) using various ports ie
SMTP port 25 or secure SMTP port 465 for outgoing mail
POP port 110 or secure POP port 995 for incoming mail
IMAP port 143 or secure IMAP port 993 for incoming mail

So depending what method you use in your email client program to collect & send email, you will also need other ports to be open (& unblocked).

If you are using a email client on a workstation to collect email directly from an external mail server eg your ISPs or someone else's mail server, then you will use either port 110, 995, 143 or 993 (& these need to be unblocked).

Note the default setting of sme server enables a smtp proxy, so local workstation email clients must use the sme server smtp mail server for sending mail & this can be using port 25 or 465 (ie email client to mail server)

Your particular issue is that you are tring to run your own mail server and your ISP has blocked port 25 for direct access to the Internet (inbound & outbound), so your mail server cannot effectively communicate with other mail servers.
Your ISP is ONLY allowing outgoing port 25 via their smtp mail server, and that's why you can send email if you enter your ISP's mail server details in the Email panel.
That's also why you cannot receive email directly on your sme server (ie incoming port 25 is blocked).

[radbrad]

Now I have it.

What I decided to do now is to find a provider that will forward my mail for free. I don't want store and forward, just forward.

What I am going to do is start a new thread on how to configiure port 26 to listen for mail (I will be asking for a proven walkthrough )

This would have to include changing spam assassin, webmail, clamav etc all to port 26.

I will post a link to this thread for the hundreds of others like me.

Regards,
Radbrad

[raem]

radbrad

> What I am going to do is start a new thread on how to configure
> port 26 to listen for mail (I will be asking for a proven walkthrough )

That's not the best idea.
Leave your smtp server running on port 25 and use the Port Forward panel to forward say port 2525 to port 25.
Configure externally (ie with no-ip.com or whoever) for incoming mail to be redirected to port 2525.
The result is that your server listens externally and receives mail on port 2525 and then when it arrives at the server it is port forwarded to local port 25 where the mail services are running.

Mail goes out OK on port 25 using your ISP's email server so no problem there.

If you change everything to run on port 26 then all external mail servers will not get your mail because they are listening on port 25 (which is standard on all mail servers).

I suggest you start to use Search.

This has been answered quite a few times before, and there is even a thread telling you what I just said ie 2525 to 25.

> This would have to include changing spam assassin, webmail, clamav etc all to port 26.

No need to change all that.

I suggest keeping this thread going so people can see where you have come from ie post how you finally did it here.

[raem]

radbrad

I searched for you.
It confirms what I advised earlier (straight from Gordon Rowell too!), as I had already read that before in posts.

http://forums.contribs.org/index.php?topic=32732.0

http://forums.contribs.org/index.php?topic=30802.0

http://forums.contribs.org/index.php?topic=24273.0

[radbrad]

I finally got it working.

Even thought my port 25 is blocked by my ISP.

It was a long road, but here is the fix ---

http://forums.contribs.org/index.php?topic=35613.0

Brad