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date: Tue, 18 Mar 2008 00:26:03 -0500,
group: microsoft.public.exchange.connectivity
back
Re: Forward all email to host's SMTP server, not on port 25
So I am not understanding your comment "I need to change it to the host of
the domain's SMTP server as the ISP's SMTP server is being blacklisted by
many spam filters." Who is the domains SMTP Server? In addition, if you
have a business account with your ISP then they should not be blocking port
25 from your IP. Worst case, they should at least allow you to Authenticate
on port 25 to their mail server. Although, if there mail servers are
blacklisted then I would be looking for another ISP.
--
John Oliver, Jr
MCSE, MCT, CCNA
Exchange MVP 2008
Microsoft Certified Partner
"Rosewood" wrote in message
news:B19358FB-CDF0-43F7-B83C-002A76FB1AEE@microsoft.com...
> Scenario: SBS2003 w/ Exchange 2003 SP2, fully patched. The ISP blocks
> ALL port 25 traffic other than their SMTP server. The current setup has
> all email being forwarded to their smtp server using the smart host
> setting in the default smtp server AND the smtp connector.
>
> I need to change it to the host of the domain's SMTP server as the ISP's
> SMTP server is being blacklisted by many spam filters.
>
> Doing a telnet test, we can connect to the ISP's SMTP server over port 587
> and send email no problem.
>
> Things I changed:
> Default SMTP Server -> Properties -> Delivery Tab -> Outbound
> Connections -> TCP Port set to 587.
> Default SMTP Server -> Properties -> Delivery Tab -> Outbound Security was
> set to basic with the username and password (same we used in the telnet
> tests that worked)
> Default SMTP Server -> Properties -> Delivery Tab -> Advanced -> Smart
> host was changed to the Host's SMTP server (we shall call it
> mail.host.com )
>
> In the General Tab of the SMTP connector, Forward all mail through this
> connector to the following smart hosts is checked, and the host's SMTP
> server is put in there. The local bridgeheads are still set to the same
> default Smtp virtual server as before. Under the advanced tab, outbound
> security was set to the same username and password.
>
> All Exchange services had been restarted.
>
> All emails just hold in queue. Nothing hits the SMTPSVC1 logs.
>
> I don't even know where to look to see what the problem is. From every
> guide / forum post I could find, that should have me covered.
>
> Thanks
date: Tue, 18 Mar 2008 19:36:28 -0400
author: John Oliver, Jr. [MVP]
Re: Forward all email to host's SMTP server, not on port 25
To further explain the situation, although this doesn't really help fix the
problem, I am currently using Cox HSI. I have a residential account and I
use this server for my own personal use. To get the same speeds that I get
now, I would have to shell out an additional $200 a month to go to a
business account. Not worth it to get a static IP and port 25 access.
My domain is hosted through dreamhost and they offer SMTP service on 587 for
this very reason.
Cox is being blacklisted because their SMTP servers are basically open
relays for their customers and quite a bit of spam still goes out through
them.
Also, my email will fail certain spam filters since it comes from one domain
but is sent from an SMTP server that isn't associated with that domain.
So if I can use dreamhost's smtp server, I can kill a few birds with one
stone.
Let me say again, everything works if I use my ISP's smtp server. I can
connect and send email using Dreamhost's SMTP server via Telnetl, outlook,
etc. no problem as well, so it isn't a blocking issue or dns issue, etc. I
just cannot get the exchange server to connect .
"John Oliver, Jr. [MVP]" wrote in message
news:uiSbkDViIHA.5504@TK2MSFTNGP05.phx.gbl...
> So I am not understanding your comment "I need to change it to the host of
> the domain's SMTP server as the ISP's SMTP server is being blacklisted by
> many spam filters." Who is the domains SMTP Server? In addition, if you
> have a business account with your ISP then they should not be blocking
> port 25 from your IP. Worst case, they should at least allow you to
> Authenticate on port 25 to their mail server. Although, if there mail
> servers are blacklisted then I would be looking for another ISP.
>
> --
> John Oliver, Jr
> MCSE, MCT, CCNA
> Exchange MVP 2008
> Microsoft Certified Partner
>
>
> "Rosewood" wrote in message
> news:B19358FB-CDF0-43F7-B83C-002A76FB1AEE@microsoft.com...
>> Scenario: SBS2003 w/ Exchange 2003 SP2, fully patched. The ISP blocks
>> ALL port 25 traffic other than their SMTP server. The current setup has
>> all email being forwarded to their smtp server using the smart host
>> setting in the default smtp server AND the smtp connector.
>>
>> I need to change it to the host of the domain's SMTP server as the ISP's
>> SMTP server is being blacklisted by many spam filters.
>>
>> Doing a telnet test, we can connect to the ISP's SMTP server over port
>> 587 and send email no problem.
>>
>> Things I changed:
>> Default SMTP Server -> Properties -> Delivery Tab -> Outbound
>> Connections -> TCP Port set to 587.
>> Default SMTP Server -> Properties -> Delivery Tab -> Outbound Security
>> was set to basic with the username and password (same we used in the
>> telnet tests that worked)
>> Default SMTP Server -> Properties -> Delivery Tab -> Advanced -> Smart
>> host was changed to the Host's SMTP server (we shall call it
>> mail.host.com )
>>
>> In the General Tab of the SMTP connector, Forward all mail through this
>> connector to the following smart hosts is checked, and the host's SMTP
>> server is put in there. The local bridgeheads are still set to the same
>> default Smtp virtual server as before. Under the advanced tab, outbound
>> security was set to the same username and password.
>>
>> All Exchange services had been restarted.
>>
>> All emails just hold in queue. Nothing hits the SMTPSVC1 logs.
>>
>> I don't even know where to look to see what the problem is. From every
>> guide / forum post I could find, that should have me covered.
>>
>> Thanks
>
>
date: Tue, 18 Mar 2008 22:12:58 -0500
author: Rosewood
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