Saturday, May 17, 2008

Mail flow doesn't work if Exchange 2007 Installed on Server 2008 with certain routers


Windows vista and windows Server 2008 have the TCP autotuning setting enabled by default, so if the router is small or outdated maybe it doesn't support that feature, so we have to disable the feature on Server 2008 to make that work, but beware that this will decrease the server performance

Symptom:
Mail flow doesn't work if Exchange 2007 Installed on Server 2008 with certain small routers


Cause:
That's if the router doesn't support TCP autotuning settings in Windows Server 2008.

Resolution:
open RUN==CMD== and type this command

netsh interface tcp set global autotuninglevel=disabled

this will disable the feature and we back in business

here is more info about parameters for that command from MS sites:


The following autotuning settings are available if a router supports TcpWindowScaling:

Disabled: Fix the receive window at its default value.

Highly Restricted: Allow the receive window to grow beyond its default value, but do so very conservatively.

Restricted: Allow the receive window to grow beyond its default value, but limit such growth in some scenarios.

Normal: Allow the receive window to grow to accommodate most scenarios.

Experimental: Allow the receive window to grow to accommodate extreme scenarios.


2 comments:

oakleyses said...

hollister, beats by dre, lululemon, timberland boots, insanity workout, nike huaraches, p90x workout, iphone cases, soccer jerseys, instyler, nike air max, abercrombie and fitch, wedding dresses, hermes belt, ray ban, ralph lauren, valentino shoes, jimmy choo outlet, chi flat iron, converse outlet, converse, new balance shoes, ferragamo shoes, baseball bats, lancel, reebok outlet, nike roshe run, longchamp uk, mac cosmetics, nike trainers uk, nfl jerseys, ghd hair, soccer shoes, celine handbags, north face outlet, gucci, nike air max, asics running shoes, vans, mont blanc pens, oakley, north face outlet, bottega veneta, babyliss, herve leger, louboutin, mcm handbags, hollister clothing, hollister, vans outlet

oakleyses said...

juicy couture outlet, canada goose uk, karen millen uk, doudoune moncler, wedding dresses, ugg,ugg australia,ugg italia, supra shoes, pandora charms, pandora jewelry, coach outlet, louis vuitton, montre pas cher, canada goose, canada goose jackets, swarovski crystal, canada goose outlet, canada goose outlet, marc jacobs, swarovski, moncler outlet, moncler uk, ugg pas cher, louis vuitton, juicy couture outlet, ugg uk, pandora jewelry, moncler, canada goose outlet, canada goose, louis vuitton, louis vuitton, pandora uk, toms shoes, ugg, moncler, moncler outlet, links of london, thomas sabo, replica watches, louis vuitton, moncler, ugg,uggs,uggs canada, canada goose, hollister, moncler