Re: ACL trouble - Testing connection to SMTP Server



No. That is a connection from home that I am trying to telnet in.
That's where I think the port 25 blocking is. My mail server is
connected to a T1 at another carrier. I am trying to telnet from my
home to the mail server at work.

We already have our mail hosted somewhere else so customers have been
using that. I need to test the mail server before I move the records
over because of that.

Thanks.

Chad Mahoney wrote:
K.J. 44 wrote:
If an ISP is doing port 25 blocking, when I try to test getting through
my firewall to my mail server by telnetting on port 25, will that get
blocked too?

I have rules to allow SMTP traffic through and was trying to test them
with this method and I saw nothing on my ACL firewall hits. I have
been very confused by this for several days. Then I tried to telnet
into port 25 on a company that i used to work for where this worked
(using a different ISP for connection) and it timed out.

Thanks.

I just noticed, your header info points your IP to 69.214.4.217 when I
telnet into that IP the connection is accepted but no SMTP banner
appears. Is 69.214.4.217 your IP?

.



Relevant Pages

  • Re: Random unprivileged TCP ports below 5000 kind-of open for a fraction of a second
    ... When Nmap (or many ... > other applications, such as Telnet) does a connectcall, the OS is ... > supposed to choose a good souce port to bind to for the connection. ... I saw a familiar "Connection reset by peer" every time the random port ...
    (Incidents)
  • Re: IP Blocker in SBS2003 exchange
    ... > What I was trying to explain in the telnet section was that I realise ... > the server is listening for connections on ports 110 and 25. ... > but he can connect to port 110. ... > well as another wireless broadband connection. ...
    (microsoft.public.windows.server.sbs)
  • Re: Unable to send email from VFP
    ... Is Possible your router is blocking mail traffic? ... try to telnet into your mail server from cmd prompt - ie ... Port is blocked at router ...
    (microsoft.public.fox.programmer.exchange)
  • [opensuse] Help With Mail Server
    ... I want to setup the mail server so when you send an email to ... But I can't even telnet to port 25 on this machine: ... connect to address 74.420.420.420 Connection refused ...
    (SuSE)
  • Re: Possibly OT: sending email from shell scripts on cygwin
    ... $ telnet your-smtp-server 25 ... With the outgoing SMTP server I have configured for Thunderbird (smtp.comcast.net using port 587) I get this for the 3 ports we've seen mentioned in this thread: ... Connecting To smtp.comcast.net...Could not open connection to the host, ...
    (comp.unix.shell)