AOL Bouncing through SBS

Has anyone had a problem with AOL mail bouncing back to
the SBS servers? We have 4 clients that have various ISP
connections, but any AOL mail they send is bouncing back a
few days later. Trying to determine if it's an
SBS/Exchange issue, or just AOL.

DG
Fri Jul 18 11:13:56 CDT 2003

Yes I have had this problem, I found that I had been black listed. Have you
secured your server from SMTP relay attacks?



"BenP" <bpearce@advcybpro.com> wrote in message
news:0c0c01c34d3e$e830cfd0$a601280a@phx.gbl...
> Has anyone had a problem with AOL mail bouncing back to
> the SBS servers? We have 4 clients that have various ISP
> connections, but any AOL mail they send is bouncing back a
> few days later. Trying to determine if it's an
> SBS/Exchange issue, or just AOL.

BenP
Fri Jul 18 11:35:40 CDT 2003

I will have to check with the clients to see if they are
secure from SMTP relay attacks. Do you happen to know the
white page for changing that?

Thanks in advance.

>-----Original Message-----
>Yes I have had this problem, I found that I had been
black listed. Have you
>secured your server from SMTP relay attacks?
>
>
>
>"BenP" <bpearce@advcybpro.com> wrote in message
>news:0c0c01c34d3e$e830cfd0$a601280a@phx.gbl...
>> Has anyone had a problem with AOL mail bouncing back to
>> the SBS servers? We have 4 clients that have various
ISP
>> connections, but any AOL mail they send is bouncing
back a
>> few days later. Trying to determine if it's an
>> SBS/Exchange issue, or just AOL.
>
>
>.
>

Kevin
Fri Jul 18 12:55:04 CDT 2003

Many companies are rejecting email if they cannot do a reverse DNS check on
the email. Check your SMTP setup - you may wish to switch fron "using DNS"
to using a "smart host" - and enter the SMPT server name of your ISP.

-kw

"BenP" <bpearce@advcybpro.com> wrote in message
news:0c0c01c34d3e$e830cfd0$a601280a@phx.gbl...
> Has anyone had a problem with AOL mail bouncing back to
> the SBS servers? We have 4 clients that have various ISP
> connections, but any AOL mail they send is bouncing back a
> few days later. Trying to determine if it's an
> SBS/Exchange issue, or just AOL.

Karanne
Sat Jul 19 05:22:41 CDT 2003

Check to see if you're listed as a Dial up IP address. RBL has blacklisted
the 68.18.x.x/16 BellSouth netblock which is used for home DSL connections.
If you have a client operating out of a dynamic IP on a DSL connection, this
might be part of the problem.

If that's the case, have them relay through the ISP's mail server, or
upgrade them to a static IP on a different netblock. For BellSouth, the
price difference is US$20 a month.

OT, I found a useful site: http://www.dnsreport.com/. If you're using a
dynamic DNS service like no-ip.com, it will let you verify your settings.

HTH,
Kara

"DG" <dave.gadd@virgin.net> wrote in message
news:OEqeUeUTDHA.1552@TK2MSFTNGP10.phx.gbl...
> Yes I have had this problem, I found that I had been black listed. Have
you
> secured your server from SMTP relay attacks?
>
>
>
> "BenP" <bpearce@advcybpro.com> wrote in message
> news:0c0c01c34d3e$e830cfd0$a601280a@phx.gbl...
> > Has anyone had a problem with AOL mail bouncing back to
> > the SBS servers? We have 4 clients that have various ISP
> > connections, but any AOL mail they send is bouncing back a
> > few days later. Trying to determine if it's an
> > SBS/Exchange issue, or just AOL.
>
>

Charlie
Wed Aug 13 02:56:03 CDT 2003

One thing I just discovered (as I realized that this was happening to me) -
if you are being cheap and using a dynamic IP with a dynamic DNS service -
AOL is blocking known residential dynamic IP ranges from ISPs. They are
requiring you to send mail through your ISP's SMTP mail host.

I verified this by attempting to telnet to port 25 of one of AOL's mail
servers and got an immediate error message. Very informative (if you know
SMTP, sigh).

--
Charlie Anthe
Microsoft Small Business Server Team

This posting is provided "AS IS" with no warranties, and confers no rights.

"Kevin Weilbacher" <kweilbac@gte.net> wrote in message
news:ORfr6WVTDHA.1912@tk2msftngp13.phx.gbl...
> Many companies are rejecting email if they cannot do a reverse DNS check
on
> the email. Check your SMTP setup - you may wish to switch fron "using
DNS"
> to using a "smart host" - and enter the SMPT server name of your ISP.
>
> -kw
>
> "BenP" <bpearce@advcybpro.com> wrote in message
> news:0c0c01c34d3e$e830cfd0$a601280a@phx.gbl...
> > Has anyone had a problem with AOL mail bouncing back to
> > the SBS servers? We have 4 clients that have various ISP
> > connections, but any AOL mail they send is bouncing back a
> > few days later. Trying to determine if it's an
> > SBS/Exchange issue, or just AOL.
>
>