Like several other people in the UK, I've got a client who uses SBS with a
standard modem for Internet access. He has to pay for telephone calls. He
uses the POP3 connector to collect mail. No active caching on ISA, no
Windows Update on PCs or server, no regular AV updates.

Originally, the POP3 connector was set to collect mail every 30 minutes
Mon-Fri 9am - 6pm and I tried a custom schedule for the SMTP connector, so
that it would only be used Mon-Fri 9am-6pm twice an hour (like POP3). I
could see that using a custom schedule makes the connector available in 15
minutes blocks, and the help suggested that during these blocks the
connector would dial, at other times it would wait for something else to
open a connection.

The client's first phone bill was 175GBP (up from 50GBP dialling directly
from a PC). The phone bill suggests that the SMTP connector dials for every
outgoing email, whatever the time of day, and also holds the line open (idle
time set to one minute before hang up) during the 15 minute blocks from the
time the mail was sent until the end of the block. The client is not
pleased. Changed schedule so POP3 dials 5 times a day and changed the SMTP
connector back to Always use. Next phone bill was 150GBP.

How can I tame the SMTP connector so it queues outgoing email and only sends
when there's already a connection or at least only dials once every two
hours? I searched the archives for this list, but this connection is
behaving quite as the info I've found suggests it should.

Client is a small non-profit and isn't allowed to get a fixed rate/no call
charge dial-up line as they share a switchboard with a hospital.

Any advice greatly appreciated.

Thanks

Kathy

Re: Dial-up problems - advice please. by Steve

Steve
Tue Jul 22 05:30:23 CDT 2003

Kathy wrote:

> Like several other people in the UK, I've got a client who uses SBS
> with a standard modem for Internet access. He has to pay for
> telephone calls. He uses the POP3 connector to collect mail. No
> active caching on ISA, no Windows Update on PCs or server, no regular
> AV updates.
>
> Originally, the POP3 connector was set to collect mail every 30
> minutes Mon-Fri 9am - 6pm and I tried a custom schedule for the SMTP
> connector, so that it would only be used Mon-Fri 9am-6pm twice an
> hour (like POP3). I could see that using a custom schedule makes the
> connector available in 15 minutes blocks, and the help suggested that
> during these blocks the connector would dial, at other times it would
> wait for something else to open a connection.
>
> The client's first phone bill was 175GBP (up from 50GBP dialling
> directly from a PC). The phone bill suggests that the SMTP connector
> dials for every outgoing email, whatever the time of day, and also
> holds the line open (idle time set to one minute before hang up)
> during the 15 minute blocks from the time the mail was sent until the
> end of the block. The client is not pleased. Changed schedule so POP3
> dials 5 times a day and changed the SMTP connector back to Always
> use. Next phone bill was 150GBP.
>
> How can I tame the SMTP connector so it queues outgoing email and
> only sends when there's already a connection or at least only dials
> once every two hours? I searched the archives for this list, but this
> connection is behaving quite as the info I've found suggests it
> should.
>
> Client is a small non-profit and isn't allowed to get a fixed rate/no
> call charge dial-up line as they share a switchboard with a hospital.
>
> Any advice greatly appreciated.
>
> Thanks
>
> Kathy

Assuming the PBX is connected to BT, they should still be able to sign
up for one of the various AnyTime flat-rate internet packages. These
use an 0844 number (IIRC) which is not charged (assuming they stay
within the package limits).

That aside, setting the Connection Time in the Delivery Options tab of
the SMTP Connector should be your answer. It has several predefined
choices including "Run Every Hour", "Run Every 2 Hours", "Run Every 4
Hours" and "Use Custom Schedule" among others. The smallest "block" of
time for which the connector can be configured is 15 minutes, and the
way this works is like this: if at the beginning of the block there are
outstanding messages to send, the connector will begin sending the
messages, if there are no messages to send, it will do nothing. If new
messages to be sent appear during the 15m block, the connector will
send them immediately.

All the Run every X hours options have a single 15 minute block set
starting at each X hourly intervals. Depending on mail volume, and the
DUN timeouts, the connector might initiate several internet calls
within the 15 minute window.

--
Steve Foster [SBS MVP]
---------------------------------------
MVPs do not work for Microsoft. Please reply only to the newsgroups.

Re: Dial-up problems - advice please. by Kathy

Kathy
Tue Jul 22 07:33:27 CDT 2003

"Steve Foster [SBS MVP]" <steve.foster@picamar.co.uk> wrote in message
news:e0vdDxDUDHA.2088@TK2MSFTNGP10.phx.gbl...
> Kathy wrote:
>
> > Like several other people in the UK, I've got a client who uses SBS
> > with a standard modem for Internet access. He has to pay for
> > telephone calls. He uses the POP3 connector to collect mail.
<snipped>> >
> > How can I tame the SMTP connector so it queues outgoing email and
> > only sends when there's already a connection or at least only dials
> > once every two hours? I searched the archives for this list, but this
> > connection is behaving quite as the info I've found suggests it
> > should.


> Assuming the PBX is connected to BT, they should still be able to sign
> up for one of the various AnyTime flat-rate internet packages. These
> use an 0844 number (IIRC) which is not charged (assuming they stay
> within the package limits).
>
> That aside, setting the Connection Time in the Delivery Options tab of
> the SMTP Connector should be your answer. It has several predefined
> choices including "Run Every Hour", "Run Every 2 Hours", "Run Every 4
> Hours" and "Use Custom Schedule" among others. The smallest "block" of
> time for which the connector can be configured is 15 minutes, and the
> way this works is like this: if at the beginning of the block there are
> outstanding messages to send, the connector will begin sending the
> messages, if there are no messages to send, it will do nothing. If new
> messages to be sent appear during the 15m block, the connector will
> send them immediately.
>
> All the Run every X hours options have a single 15 minute block set
> starting at each X hourly intervals. Depending on mail volume, and the
> DUN timeouts, the connector might initiate several internet calls
> within the 15 minute window.

Thanks Steve

It's not a BT line and the telecoms provider has refused to give them a
no-call-charges dial-up. ISP doesn't offer one either.

I read the description from Charles Anthe(?) about how the custom schedule
works, BUT,
I had a custom schedule set for SMTP with a 15min block every hour starting
at 9 and ending at 6pm. That's what produced the 175GPB phone bill. Looking
at the logs, it seemed to be dialling outside the period set for the
connector - eg around the half hour (looked like the event sink GET
http://.com 80 doing it anyway). Haven't seen the last lot of logs, just had
a call from the client about their 150GBP bill. It just doesn't seem to be
working as described. It definitely dials if there are (apparently) no
messages to send, I've watched it.

Anything else I can look for? I'm going to check the PCs for trojans as
well, if the client ever lets me near the office again.

Kathy



Re: Dial-up problems - advice please. by Steve

Steve
Tue Jul 22 15:14:32 CDT 2003

Kathy wrote:

> "Steve Foster [SBS MVP]" <steve.foster@picamar.co.uk> wrote in message
> news:e0vdDxDUDHA.2088@TK2MSFTNGP10.phx.gbl...
> > Kathy wrote:
> >
> > > Like several other people in the UK, I've got a client who uses
> > > SBS with a standard modem for Internet access. He has to pay for
> > > telephone calls. He uses the POP3 connector to collect mail.
> <snipped>> >
> > > How can I tame the SMTP connector so it queues outgoing email and
> > > only sends when there's already a connection or at least only
> > > dials once every two hours? I searched the archives for this
> > > list, but this connection is behaving quite as the info I've
> > > found suggests it should.
>
>
> > Assuming the PBX is connected to BT, they should still be able to
> > sign up for one of the various AnyTime flat-rate internet packages.
> > These use an 0844 number (IIRC) which is not charged (assuming they
> > stay within the package limits).
> >
> > That aside, setting the Connection Time in the Delivery Options tab
> > of the SMTP Connector should be your answer. It has several
> > predefined choices including "Run Every Hour", "Run Every 2 Hours",
> > "Run Every 4 Hours" and "Use Custom Schedule" among others. The
> > smallest "block" of time for which the connector can be configured
> > is 15 minutes, and the way this works is like this: if at the
> > beginning of the block there are outstanding messages to send, the
> > connector will begin sending the messages, if there are no messages
> > to send, it will do nothing. If new messages to be sent appear
> > during the 15m block, the connector will send them immediately.
> >
> > All the Run every X hours options have a single 15 minute block set
> > starting at each X hourly intervals. Depending on mail volume, and
> > the DUN timeouts, the connector might initiate several internet
> > calls within the 15 minute window.
>
> Thanks Steve
>
> It's not a BT line and the telecoms provider has refused to give them
> a no-call-charges dial-up. ISP doesn't offer one either.
>
> I read the description from Charles Anthe(?) about how the custom
> schedule works, BUT,
> I had a custom schedule set for SMTP with a 15min block every hour
> starting at 9 and ending at 6pm. That's what produced the 175GPB
> phone bill. Looking at the logs, it seemed to be dialling outside the
> period set for the connector - eg around the half hour (looked like
> the event sink GET http://.com 80 doing it anyway). Haven't seen the
> last lot of logs, just had a call from the client about their 150GBP
> bill. It just doesn't seem to be working as described. It definitely
> dials if there are (apparently) no messages to send, I've watched it.

That doesn't look like Exchange traffic. I would suggest you
temporarily shut down Exchange to prove it's not Exchange.

The SMTP connector will absolutely not make a connection unless there's
mail to deliver (unless you've told it to issue a TURN or ETRN to a
secondary mail host!).

>
> Anything else I can look for? I'm going to check the PCs for trojans
> as well, if the client ever lets me near the office again.

Is Active Content Caching turned on in ISA? That tends to go online by
itself.

--
Steve Foster [SBS MVP]
---------------------------------------
MVPs do not work for Microsoft. Please reply only to the newsgroups.

Re: Dial-up problems - advice please. by Steve

Steve
Wed Jul 23 08:40:46 CDT 2003

Kathy wrote:

> > >
> > > Anything else I can look for? I'm going to check the PCs for
> > > trojans as well, if the client ever lets me near the office again.
> >
> > Is Active Content Caching turned on in ISA? That tends to go online
> > by itself.
> >
> > --
> > Steve Foster [SBS MVP]
> > ---------------------------------------
> > MVPs do not work for Microsoft. Please reply only to the newsgroups.
>
> Thanks, Steve
>
> Active caching is off. AV update checking off. Critical updates
> disabled. Just thought of WINS autodiscovery.
> I've seem some posts about not using DNS forwarders with a dial-up
> connection. Is that correct, as I do have the ISPs DNS servers in as
> forwarders. (Could it be DNS traffic?)
> Anything else?

DNS traffic would show up as UDP on port 53. But it wouldn't hurt to
eliminate the Forwarders (might slow surfing a teensy fraction).

Best bet is to try and analyse the ISA logs to see what's going out.

>
> This is the first modem dial-up with sbs2000 I've had to deal with
> (ISDN with a router is not the same!) and it's driving me nuts.

It's a while since I've dealt with dial-up myself.

--
Steve Foster [SBS MVP]
---------------------------------------
MVPs do not work for Microsoft. Please reply only to the newsgroups.