Re: POP3 and Firewalls
From: gurvinder.nijjar (gsnijjar_at_hotmail.com)
Date: 01/27/05
- Next message: Marc Knecht: "Ex2k3 Setup Error SRS 0XC0070534"
- Previous message: Always Learning: "RE: Exchange 2003 help PLEASE"
- In reply to: Rui J.M. Silva: "Re: POP3 and Firewalls"
- Next in thread: Rui J.M. Silva: "Re: POP3 and Firewalls"
- Reply: Rui J.M. Silva: "Re: POP3 and Firewalls"
- Messages sorted by: [ date ] [ thread ]
Date: Thu, 27 Jan 2005 14:30:42 -0000
I have configured the smtp as the ip of the firewall and also opened port 25
for all traffic on our firewall. But when I telent to the firewall ip on
that port I get connection failed. What does that mean.
"Rui J.M. Silva" <rjms(nospam4me)@oninet.pt> wrote in message
news:OS652i7AFHA.2316@TK2MSFTNGP15.phx.gbl...
> When you configured the Outlook Express account, did you specify the
> external IP of your firewall as the SMTP server?
> Try starting a telnet session to that IP, port 25, and see what's the
> response.
>
> --
> Blog "subject: exchange"
> http://spaces.msn.com/members/ehlo
>
>
> "gurvinder.nijjar" <gsnijjar@hotmail.com> escreveu na mensagem
> news:uVj7qV7AFHA.384@TK2MSFTNGP10.phx.gbl...
> > The exchange server to the internet uses NAT. We already have a rule in
> > our
> > firewall which allows SMTP traffic from our ISP to our exchange server.
> > The
> > rule has a NAT from our external IP (firewall ) to exchange server
> > internal
> > IP.
> >
> > I can download email from exchange server to outlook express by opening
> > port
> > 110 for POP3. But how can i configure outlook express to send emails
> > through my exchange server, in other words the emails as reply address
of
> > my
> > company email address. SMTP is opened to allow all traffic to my
exchange
> > server (NAT) for the moment. We are running exchange 5.5 and in the IMC
> > under the connections tab i have added accept connections from everyone
> > for
> > the moment, but i am still getting errors when sending emals through
> > outlook
> > express. ANY IDEAS
> > "Rui J.M. Silva" <rjms(nospam4me)@oninet.pt> wrote in message
> > news:eiKS5z5AFHA.2016@TK2MSFTNGP15.phx.gbl...
> >> How is the connection from your Exchange Server to the internet? Does
it
> >> have a public IP address or it uses NAT?
> >> You'll have to allow TCP ports:
> >> 110 (POP3) inbound
> >> 25 (SMTP) inbound
> >>
> >> To prevent relay, add your user to allowed hosts. See this article:
> >> "XFOR: Preventing the Internet Mail Service From Relaying Unsolicited
> >> Commercial E-Mail Messages"
> >> http://support.microsoft.com/default.aspx?kbid=193922
> >>
> >> --
> >> Blog "subject: exchange"
> >> http://spaces.msn.com/members/ehlo
> >>
> >> "gurvinder.nijjar" <gsnijjar@hotmail.com> escreveu na mensagem
> >> news:eTYH3T5AFHA.632@TK2MSFTNGP10.phx.gbl...
> >> > The user does not want to VPN.
> >> >
> >> > I have checked with ISP and they are going to find out if he has a
> > static
> >> > IP
> >> > for his adsl line.
> >> >
> >> > If he has a static IP i can open up a rule on firewall to allow POP3
> >> > for
> >> > this external IP.
> >> > To allow him to send emal through our exchange server would I need to
> > add
> >> > a
> >> > rule to allow smtp traffic from this external IP address. What would
i
> >> > have
> >> > to set on exchange 5.5 for this, do i have to setup on exchnange to
> > allow
> >> > relay from this external IP. How would i do this on exchange 5.5.
> >> > "Rui J.M. Silva" <rjms(nospam4me)@oninet.pt> wrote in message
> >> > news:ue3EK04AFHA.3236@TK2MSFTNGP15.phx.gbl...
> >> >> That will be a little difficult because he won't have a static IP
> >> >> address.
> >> >> Check to see if his provider has a fixed subnet and then maybe you
can
> >> >> restrict access to that subnet.
> >> >> But I think a better option is for you to set up a VPN connection.
> >> >>
> >> >> --
> >> >> Blog "subject: exchange"
> >> >> http://spaces.msn.com/members/ehlo
> >> >>
> >> >> "gurvinder.nijjar" <gsnijjar@hotmail.com> escreveu na mensagem
> >> >> news:u8m%23ur4AFHA.3016@tk2msftngp13.phx.gbl...
> >> >> > We are currently using exchange 5.5 and have a firewall in place.
> >> >> > We
> >> > have
> >> >> > a
> >> >> > remote user who wants from home to download his email to a mail
> > client
> >> > he
> >> >> > has installed on his laptop. He connects his laptop to a ADSL
line
> > and
> >> >> > then
> >> >> > wants to download his email to a to the client and also send
emails
> > but
> >> >> > his
> >> >> > from address should be from his company email address.
> >> >> >
> >> >> > So he has a POP3 client and and I need to install POP3 on exchange
> > 5.5
> >> > and
> >> >> > also open a port through our firewall for POP3. As he is using a
> > adsl
> >> >> > line
> >> >> > how would I setup a rule on our firewall for only him to download
> > email
> >> >> > from
> >> >> > our exchange server. Does the ADSL line have an Ip address or
> >> > something.
> >> >> > ALso on exchange5.5 how do allow this user to download email and
> >> >> > then
> >> > send
> >> >> > allow him to send email thrrough his client.
> >> >> >
> >> >> >
> >> >>
> >> >>
> >> >
> >> >
> >>
> >>
> >
> >
>
>
- Next message: Marc Knecht: "Ex2k3 Setup Error SRS 0XC0070534"
- Previous message: Always Learning: "RE: Exchange 2003 help PLEASE"
- In reply to: Rui J.M. Silva: "Re: POP3 and Firewalls"
- Next in thread: Rui J.M. Silva: "Re: POP3 and Firewalls"
- Reply: Rui J.M. Silva: "Re: POP3 and Firewalls"
- Messages sorted by: [ date ] [ thread ]
Relevant Pages
|
