On 11-03-14 12:43 PM, Eric Weir wrote:
I'm having a problem with Mail that I have not been able to get any help with from the
Apple forums: Mail frequently hangs up for a LONG time on sending. The little wheely
thing that spins beside "sent" in the mailbox column on the left side of the
window spins forever.
Eventually, Mail displays a window reporting that the send could not be completed and
recommending that I try an "alternative" server, which is always the server
that failed, my only server. When I accept the recommendation the message goes out
immediately.
One respondent on the Apple forums suggested rebuilding the email boxes, which
appeared to work for a while, but the problem has reappeared and rebuilding no
longer has any effect. Others on the thread I started have reported
experiencing the problem as well.
Any Mac users on the list have any suggestions as to what's going on?
Thanks,
------------------------------------------------------------------------------------------
Eric Weir
Decatur, GA USA
[email protected]
Eric, here's something to try. No guarantees though.
There's a "known" issue with an interaction between one particular Mac
OS X network config and many home routers. Mac OS X by default enables a
TCP/IP performance extension called RFC 1323. This sometimes triggers
some odd behaviour in a number of servers and router products, for
example problems uploading things (eg delivering mail).
Luckily it's fairly easily turned off. You can do that from the command
line with this:
$ sudo sysctl -w net.inet.tcp.rfc1323=0
That change is temporary and will revert back to default behaviour on
the next reboot. If you find that that helps, you can make the change
permanent by putting this line of text ...
net.inet.tcp.rfc1323=0
... into the file /etc/sysctl.conf .
(I'm assuming you're OK with doing root stuff in Terminal.app.)
-bmw
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