>> No, I'm just running the claws-mail client on this machine and my wife >> is running zimbra on her Windows 7 laptop. We've both had e-mails not >> arrive. >> I'm struggling to explain why I appear to never have problems >> when the router is taken out of the equation. How can I prove to my ISP >> that it is their problem? Long shot: it might be an MTU issue. I set the MTU to 1448 on internal LAN machines. This seems to keep everything happy, including email, VOIP services, and VPNs. I do recall having erratic email issues that were MTU related, years ago. - Mike -- users mailing list users@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe or change subscription options: https://admin.fedoraproject.org/mailman/listinfo/users Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines