Topic: SME newbie lonely in empty mailbox...

[gary]

I cannot recieve mail however I can send it. My ISP is Comcast. They are not blocking port 25 according to canyouseeme.org. I WAS recieving emails today as we were testing it out from usa.net and secureserver.com's MX servers. They were showing up. Now as I can still send, I cannot receive. I have my mx record through no-ip.org. I use tcpdump to watch as the traffic is sent out. I know it is making it as the mail is sent. I was getting errors such as my mail being refused also when I do the test in outlook It finds my server however it gives me an error about checking the email address field. I would like this to work so any help would be great.

Regards,

[rkscscc]

Is your SME set up as Server/Gateway // Private Server/Gateway or just Server?

[gary]

It is in server only mode. I have a DNS server (domain controller) that handles my DNS. The errors I get are as follows:

Hi. This is the qmail-send program at smtpout07-04.prod.mesa1.secureserver.net.
I'm afraid I wasn't able to deliver your message to the following addresses.
This is a permanent error; I've given up. Sorry it didn't work out.

<gary@cyberwatchers.com>:
Sorry, I wasn't able to establish an SMTP connection. (#4.4.1)
I'm not going to try again; this message has been in the queue too long.

I can send mail just not recieve mail... The TCP 25 port is being blocked my my ISP and I need to know what port I can use. Also I am using NO-IP to handle my DNS for the mail and web server.

[stephen noble]

The TCP 25 port is being blocked my my ISP

find another ISP,
or
have mail delivered to another server, and use fetchmail

[pfloor]

First you write:
"My ISP is Comcast. They are not blocking port 25 according to canyouseeme.org"

Then you write:
"The TCP 25 port is being blocked my my ISP."

Can you please clarify yourself.

PS. As far as I know, Comcast does not block any ports.

[pfloor]

It is in server only mode. I have a DNS server (domain controller) that handles my DNS. The errors I get are as follows:

Have you forwarded port 25 from your DNS server to your SME server?

[william_syd]

Port 25 is the default port for sending and receiving mail. ISPs block this port to reduce the amount of spam generated by worms on infected machines within their network. If you need to send legitimate email and your ISP blocks port 25. Consider the solutions from No-IP.com.

http://www.no-ip.com/services/managed_mail/inbound_port_25_unblock.html

[gary]

I do not want to use another server to send or receive my mail that is why I have a mail server. Comcast was not blocking port 25 untill I started to use it. That is the way ISP's somtimes seem to work.

As far as changing my ISP, that would really be a pain.

I do not have my DNS server pointing 25 to my server, I have my router port forwarding 25 to my server.

As I have mentioned allready, I am able to send mail from outlook, mozilla mail or the web mail via sme. I was receiving mail for about a couple of hours and then it started being blocked. This is the error I get when trying to send mail to my server from outside my lan:

Hi. This is the qmail-send program at smtpout07-04.prod.mesa1.secureserver.net.
I'm afraid I wasn't able to deliver your message to the following addresses.
This is a permanent error; I've given up. Sorry it didn't work out.

<gary@cyberwatchers.com>:
Sorry, I wasn't able to establish an SMTP connection. (#4.4.1)
I'm not going to try again; this message has been in the queue too long.

Is there a specific port that I can change within SME server from 25 to something else that my ISP would not be blocking? If so I found the configuration directory which it seems I can change this....

[william_syd]

Is there a specific port that I can change within SME server from 25 to something else that my ISP would not be blocking? If so I found the configuration directory which it seems I can change this....

You do not need to change any ports on your SME.

Use your router to port forward say 10025 to 25 on your SME.

Then get a friends mail server or a dynamic DNS service to send you mail on port 10025.

[gary]

when you say 10025 to 25 in my router, the router gives me the option to port forward a specific port number to my mail servers internal IP address.

smtp > 10025 to IP 192.168.1.x...

Is this correct? I will have to contact no-ip and have them redirect this port as well. That is who I have my MX record through. If I do an nslookup I get my mail server at no-ip's IP address.  

Does this sound correct?

Thanks for your help.

Regards.

[william_syd]

Most routers I've seen have source port and destination port.

So it's forward port 10025 to SME IP port 25.

The link I posted before goes to No-ip's page for this. They may use a different port than 10025.