Hi everybody, we are running Squid in production mode since two weeks and experiencing problems with Outlook Anywhere / ActiveSync Connections. Especially when Attachments > 1 MB are sent, they are stuck in the Outbox. Our config looks like this: never_direct allow all cache_peer 10.64.94.3 parent 443 0 ssl no-query originserver login=PASS sslflags=DONT_VERIFY_PEER name=exchangePeer acl exchangeACL dstdomain owa.xyz.com cache_peer_access exchangePeer allow exchangeACL http_access allow exchangeACL http_access deny all http_port 10.64.94.14:80 accel defaultsite=prophi.xyz.com vhost https_port 10.64.94.14:443 accel cert=/etc/squid3/certificates/wildcard.crt key=/etc/squid3/certificates/privkey.key defaultsite=prophi.xyz.com protocol=https vhost The squid server is secured by a Vyatta virtual firewall. Your help is highly appriciated. Best regards!