On Fri, Mar 25, 2005 at 08:06:29AM -0800, Derek Fedel wrote: > Hi All, > > I'm experiencing this strange issue where I can send an email fine > from either VLAN as long as its text only, no attachment, but when I > try to send with an attachment, it just hangs the email server process > (qmail-smtpd in this case). Is this something that may be caused by an > MTU problem? Everyone calls it an MTU problem but it has nothing to do with transmission and everything to do with reception. The NIC/driver combination you're using cannot receive fullsize tagged packets. (since they are up to four bytes larger than the plain ethernet spec maximum) > I've got a RealTek 8100 series card and a eepro100 as my > two VLAN interfaces, and this phenomenon doesnt occur at an office > that we don't have VLANs. Make sure you're using the e100 driver rather than the eepro100 driver for the Intel card. //Peter
