OWA (Microsoft Outlook web access) not working with PPPOE

RouterOS General
1

Hi,

I am a WISP, with RouterOS 2.9.51 for a 200 pppoe clients and 300 fixed ip clients,

some clients have MS Outlook Web Access, all of this can’t send email when connected thru pppoe,

but works fine when I change to fixed ip address. In fact we want to change all our clients to pppoe but

we can’t for these problem.

Consider that when I upgrade to 3.2x, major of our pppoe clients can’t connect, yours connections remains active

for a few seconds and then loose internet.

Greetings.

2

Hi Sergio,

I think your problem is related with MTU size. If you search at google you will see some
users getting problems with DSL PPPoE connections and in major cases the problem was
MTU size, see this post:
http://forums.cabling-design.com/cisco/TCP-IP-MTU-values-DSL-PPPoE-28125-.htm


Jorge

3

THANKS!!!

Jorge, your info was really usefull, :smiley:

now every works fine.


Greetings.

4

I have the same issue on my MT RB1100 can you tell me the cure please

Was this the MTU on the DSL pppoe or the MTU for the Internal PPPOE clients on your network.

If i give the client a public static IP with the public gatewat the OWA works fine but if they are NATed or on PPPOE then OWA fails.

Adrian