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Can't telnet to port 25

Last response: in Windows XP
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Anonymous
September 20, 2005 12:13:53 PM

Archived from groups: microsoft.public.windowsxp.general (More info?)

We have a server that has IIS 6 SMTP virtual server (serverA,
10.53.24.41) installed. We have allowed every machine on the LAN
(10.53.24.0/24) to be able to access it and relay messages through it.

On a few servers (w2k and w2k3), I was able to telnet to port 25 of
serverA...

220 serverA.domain.com Microsoft ESMTP MAIL Service, Version:
6.0.3790.1830 ready at
0

On a couple of other servers and on my workstation (wxp), I'm not able
to telnet to port 25...

Connecting To serverA...Could not open connection to the host, on port
25: Co
nnect failed

I've tried both IP address, FQDN, netbios name, etc.

Firewall, etc. are not turned ON on my workstation and the servers.

Anyone know why???? How do I find out on my machine why/how port 25
outbound is blocked (if it is)???

More about : telnet port

Anonymous
September 20, 2005 8:01:22 PM

Archived from groups: microsoft.public.windowsxp.general (More info?)

On Tuesday 20 September 2005 08:13 am, Calvin.Lai@shaw.ca had this to say in
microsoft.public.windowsxp.general:

> We have a server that has IIS 6 SMTP virtual server (serverA,
> 10.53.24.41) installed. We have allowed every machine on the LAN
> (10.53.24.0/24) to be able to access it and relay messages through it.
>
> On a few servers (w2k and w2k3), I was able to telnet to port 25 of
> serverA...
>
> 220 serverA.domain.com Microsoft ESMTP MAIL Service, Version:
> 6.0.3790.1830 ready at
> 0
>
> On a couple of other servers and on my workstation (wxp), I'm not able
> to telnet to port 25...
>
> Connecting To serverA...Could not open connection to the host, on port
> 25: Co
> nnect failed
>
> I've tried both IP address, FQDN, netbios name, etc.
>
> Firewall, etc. are not turned ON on my workstation and the servers.
>
> Anyone know why???? How do I find out on my machine why/how port 25
> outbound is blocked (if it is)???

Don't know what you mean by "etc"? I've seen anti-virus software block that
type of connection.


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Anonymous
September 21, 2005 1:40:18 AM

Archived from groups: microsoft.public.windowsxp.general (More info?)

Do you have mcafee 8.0?If then it blocks that port.

regards,
ssg MS-MVP

Calvin.Lai@shaw.ca wrote:

> We have a server that has IIS 6 SMTP virtual server (serverA,
> 10.53.24.41) installed. We have allowed every machine on the LAN
> (10.53.24.0/24) to be able to access it and relay messages through it.
>
> On a few servers (w2k and w2k3), I was able to telnet to port 25 of
> serverA...
>
> 220 serverA.domain.com Microsoft ESMTP MAIL Service, Version:
> 6.0.3790.1830 ready at
> 0
>
> On a couple of other servers and on my workstation (wxp), I'm not able
> to telnet to port 25...
>
> Connecting To serverA...Could not open connection to the host, on port
> 25: Co
> nnect failed
>
> I've tried both IP address, FQDN, netbios name, etc.
>
> Firewall, etc. are not turned ON on my workstation and the servers.
>
> Anyone know why???? How do I find out on my machine why/how port 25
> outbound is blocked (if it is)???
>
Anonymous
September 21, 2005 1:40:19 AM

Archived from groups: microsoft.public.windowsxp.general (More info?)

"S.Sengupta" <ssengupta_@msn.com> wrote in news:edypC3fvFHA.1988
@TK2MSFTNGP10.phx.gbl:

As does most AV that protects against mail-worms.

> Do you have mcafee 8.0?If then it blocks that port.
>
> regards,
> ssg MS-MVP
>
> Calvin.Lai@shaw.ca wrote:
>
>> We have a server that has IIS 6 SMTP virtual server (serverA,
>> 10.53.24.41) installed. We have allowed every machine on the LAN
>> (10.53.24.0/24) to be able to access it and relay messages through it.
>>
>> On a few servers (w2k and w2k3), I was able to telnet to port 25 of
>> serverA...
>>
>> 220 serverA.domain.com Microsoft ESMTP MAIL Service, Version:
>> 6.0.3790.1830 ready at
>> 0
>>
>> On a couple of other servers and on my workstation (wxp), I'm not able
>> to telnet to port 25...
>>
>> Connecting To serverA...Could not open connection to the host, on port
>> 25: Co
>> nnect failed
>>
>> I've tried both IP address, FQDN, netbios name, etc.
>>
>> Firewall, etc. are not turned ON on my workstation and the servers.
>>
>> Anyone know why???? How do I find out on my machine why/how port 25
>> outbound is blocked (if it is)???
>>
>
!