Only 90% of the time? ------------------------------------------------------ Roger D. Seielstad - MCSE Sr. Systems Administrator Inovis - Formerly Harbinger and Extricity Atlanta, GA
> -----Original Message----- > From: Martin Blackstone [mailto:MBlackstone@;superioraccess.com] > Sent: Tuesday, October 29, 2002 6:27 PM > To: Exchange Discussions > Subject: RE: VPN breaks Outlook > > > 90% of the time I have seen this in regards to E55 in an NT4 > domain it has > to do with the remote PC not being passed the WINS server info. > > -----Original Message----- > From: Tener, Richard [mailto:RTener@;midship.com] > Sent: Tuesday, October 29, 2002 2:18 PM > To: Exchange Discussions > Subject: RE: VPN breaks Outlook > > > So let me ask you question, I could never figure it out. > > I have pptp setup on a windows nt server that is my pdc. We > use this to > connect to our exchange server which is a bdc. If i connect to the my > server over the vpn and dont use the lmhost file I cannot > connect to my > exchage to read my email. So the only way I have been taught > is to add a > line to my lmhost file on the clients computer then use > nbtstat -c then -R > to purge the lmhost entries then i am able to connect to the > exchange server > through the vpn. > > So if you know of another way I can set this up so I dont > have to do it on > everyones personal computers at home (as i have been doing > for a year now) I > would appreciate it. > Can i add something to my dns server so people in my office > can connect > without lmhosts file. > > appreciate the help > rich > > -----Original Message----- > From: Roger Seielstad [mailto:roger.seielstad@;inovis.com] > Sent: Tuesday, October 29, 2002 12:01 PM > To: Exchange Discussions > Subject: RE: VPN breaks Outlook > > > Neither - its not a name resolution issue, since you can > connect to other > host on your internal network. So, you'd be best off if you ignore Mr. > Tener. Many of us have for months. > > See my previous post about MTU size. Outlook sets[1] the Do > Not Fragment bit > on much of its traffic with the server. So, it takes the 1516 > or so bits, > throws it into a packet, and sends it on its merry way. At > which point the > VPN client intercepts it[2], and encapsulates it into an > IPSec packet. Which > means an additional padding of about 56 bits for the IPSec > header info. That > makes the packet somewhere in the order of 1570 bits, and it > gets slapped on > the wire. > > Now, your friendly neighborhood[3] router sees that the > packet is larger > than it can handle (larger than its MTU size) and responds > with an ICMP > Packet must be fragmented but Don't Fragment bit set. The > problem is that > your client machine never sees that ICMP message, and so it doesn't > automatically adjust its own MTU size down, and so Outlook > chokes on sync. > > Roger > ------------------------------------------------------ > Roger D. Seielstad - MCSE > Sr. Systems Administrator > Inovis - Formerly Harbinger and Extricity > Atlanta, GA > > [1] Stupidly - very very stupidly > > [2] Probably just like the Cisco clients - it shims the IP stack right > around the MPR level > > [3] Actually, I believe it's the other end of the connection, > not the local > end, but that's really irrelevant. > > > > -----Original Message----- > > From: RBHATIA [mailto:RBHATIA@;AIIM.ORG] > > Sent: Tuesday, October 29, 2002 9:18 AM > > To: Exchange Discussions > > Subject: RE: VPN breaks Outlook > > > > > > Is it the LMHOSTS file or the HOSTS file ? > > > > -----Original Message----- > > From: Tener, Richard [mailto:RTener@;midship.com] > > Sent: Tuesday, October 29, 2002 9:24 AM > > To: Exchange Discussions > > Subject: RE: VPN breaks Outlook > > > > > > yes you should use the lmhost file on the client pc to map to > > your exchange > > server thats what we use here at my office and it works good. > > If you need > > more help dont hesitate to email me. > > > > rich > > > > -----Original Message----- > > From: JPC [mailto:jpciocon@;hotmail.com] > > Sent: Monday, October 28, 2002 8:10 PM > > To: Exchange Discussions > > Subject: VPN breaks Outlook > > > > > > Hi, folks: > > > > Mixed mode, currently migrating users from 5.5 to E2k. > > Remote users have > > Outlook 2002 on W2k Professional laptops and Alcatel PERMIT/Client. > > > > These users connect via dial-up, they can access their > mailboxes and > > send/receive no problem. When they use LinkSys router and > DSL, they > > can access our network, the internet and other network resources > > EXCEPT for > > their mailboxes on the E2k server. Synchronization failure > > messages are > > related to "network problems preventing access to the > > Exchange server" or > > the RPC message box "retrieving data from Exchange server". These > > eventually fail and nothing is exchanged between the client > and their > > server mailbox. > > > > Has anyone seen this? If so, what tips would you suggest? > > > > Thanks very much. > > -Juancho > > > > _________________________________________________________________ > > List posting FAQ: http://www.swinc.com/resource/exch_faq.htm > > Archives: http://www.swynk.com/sitesearch/search.asp > > To unsubscribe: mailto:leave-exchange@;ls.swynk.com > > Exchange List admin: [EMAIL PROTECTED] > > > > _________________________________________________________________ > > List posting FAQ: http://www.swinc.com/resource/exch_faq.htm > > Archives: http://www.swynk.com/sitesearch/search.asp > > To unsubscribe: mailto:leave-exchange@;ls.swynk.com > > Exchange List admin: [EMAIL PROTECTED] > > > > _________________________________________________________________ > > List posting FAQ: http://www.swinc.com/resource/exch_faq.htm > > Archives: http://www.swynk.com/sitesearch/search.asp > > To unsubscribe: mailto:leave-exchange@;ls.swynk.com > > Exchange List admin: [EMAIL PROTECTED] > > > > _________________________________________________________________ > List posting FAQ: http://www.swinc.com/resource/exch_faq.htm > Archives: http://www.swynk.com/sitesearch/search.asp > To unsubscribe: mailto:leave-exchange@;ls.swynk.com > Exchange List admin: [EMAIL PROTECTED] > > _________________________________________________________________ > List posting FAQ: http://www.swinc.com/resource/exch_faq.htm > Archives: http://www.swynk.com/sitesearch/search.asp > To unsubscribe: mailto:leave-exchange@;ls.swynk.com > Exchange List admin: [EMAIL PROTECTED] > > _________________________________________________________________ > List posting FAQ: http://www.swinc.com/resource/exch_faq.htm > Archives: http://www.swynk.com/sitesearch/search.asp > To unsubscribe: mailto:leave-exchange@;ls.swynk.com > Exchange List admin: [EMAIL PROTECTED] > _________________________________________________________________ List posting FAQ: http://www.swinc.com/resource/exch_faq.htm Archives: http://www.swynk.com/sitesearch/search.asp To unsubscribe: mailto:leave-exchange@;ls.swynk.com Exchange List admin: [EMAIL PROTECTED]
