[kwlug-disc] Testing a mail port

[Joe Wennechuk]

I do not run the server. I am working for a client who believes, when they switched hosting companies, their sending of email stopped sending from outlook express. forcing them to use the web interface at mail.ufn.com. At least that is what they report. I am not sure it is due to the host changing. When I call ufn.com they tell me that their incoming smtp ports are 25, or 587, and those work for everyone else.

Joseph WennechukPhone: (226) 600-6119https://www.linkedin.com/pub/joseph-wennechuk/4/b59/382


> Date: Wed, 9 Mar 2016 10:10:01 -0500
> From: kb at 2bits.com
> To: kwlug-disc at kwlug.org
> Subject: Re: [kwlug-disc] Testing a mail port
> 
> First things first ...
> 
> Are you sure you have some program that is listening on the SMTP port(s)?
> 
> Try this command:
> 
> $ netstat -ltup
> 
> Or its numeric variant:
> 
> $ netstat -ltupn
> 
> It will tell you which program is listening at which port.
> 
> On Wed, Mar 9, 2016 at 10:02 AM, Joe Wennechuk
> <youcanreachmehere at hotmail.com> wrote:
> > Hello All,
> >
> > I am helping a customer, the issue is they can receive mail IMAP, but can
> > not send. When I call the people at the domain they say outgoing smtp is
> > port 25, or 587, and incoming IMAP is 993. They also have POP on 110 , and
> > Webmail on port 80, and some other services. I can not contact the mail
> > server on either 25, or 587. I have tried to use nmap to find the open
> > ports. When I call Bell they instruct me how to open a port on the router;
> > they are not understanding me. I have seen Bell block port 25 before on home
> > accounts but not 587. What should I use to test this? How can I prove it is
> > Bell blocking it? I have been testing the listed ones with telnet which I
> > think should test correctly, and all ports listed by nmap respond, but 25,
> > and 587 give no response. I have pasted some of my other tests below.
> >
> > nmap results..
> > joe at streetposts:~$ sudo nmap -Pn mail.ufn.com
> >
> > Starting Nmap 6.40 ( http://nmap.org ) at 2016-03-09 09:49 EST
> > Nmap scan report for mail.ufn.com (54.235.159.86)
> > Host is up (0.14s latency).
> > Not shown: 993 filtered ports
> > PORT     STATE SERVICE
> > 80/tcp   open  http
> > 110/tcp  open  pop3
> > 143/tcp  open  imap
> > 443/tcp  open  https
> > 993/tcp  open  imaps
> > 995/tcp  open  pop3s
> > 8008/tcp open  http
> >
> > Nmap done: 1 IP address (1 host up) scanned in 173.40 seconds
> >
> >
> > and telnet tests..
> > joe at streetposts:~$ telnet mail.ufn.com 25
> > Trying 54.235.159.86...
> > telnet: Unable to connect to remote host: Connection timed out
> >
> > joe at streetposts:~$ telnet mail.ufn.com 587
> > Trying 54.235.159.86...
> > telnet: Unable to connect to remote host: Connection timed out
> >
> >
> >
> > joe at streetposts:~$ telnet mail.ufn.com 80
> > Trying 54.235.159.86...
> > Connected to mail.ufn.com.
> > Escape character is '^]'
> >
> > joe at streetposts:~$ telnet mail.ufn.com 993
> > Trying 54.235.159.86...
> > Connected to mail.ufn.com.
> > Escape character is '^]'.
> >
> > joe at streetposts:~$ telnet mail.ufn.com 110
> > Trying 54.235.159.86...
> > Connected to mail.ufn.com.
> > Escape character is '^]'.
> > +OK Atmail IMAP/POP3 server ready
> >
> >
> > Joseph Wennechuk
> > Phone: (226) 600-6119
> > https://www.linkedin.com/pub/joseph-wennechuk/4/b59/382
> >
> >
> > _______________________________________________
> > kwlug-disc mailing list
> > kwlug-disc at kwlug.org
> > http://kwlug.org/mailman/listinfo/kwlug-disc_kwlug.org
> >
> 
> 
> 
> -- 
> Khalid M. Baheyeldin
> 2bits.com, Inc.
> Fast Reliable Drupal
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> and wrong." -- H.L. Mencken
> 
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