I have whose entries include many links to entries in a second weblog.

When I publish an entry in the first weblog it sends lots of TrackBacks to the second weblog. In MT 2.661 this worked erratically - the page listing the TrackBacks being sent would hang, duplicate pings would get sent, only some of them would send, etc. But eventually I'd get all the pings sent.

I've just upgraded to 3.11, and published a new entry in the first weblog. It sent five pings to the second weblog and then returned me to the Edit Entry screen reporting an error. The Activity Log shows several errors like this:


If I try and save the entry again, no further pings are sent and I get more of the above errors.

I've read various things about ThrottleSeconds, and tried adding "ThrottleSeconds 0" to mt.cfg, but to no effect.

How can I successfully send all these TrackBacks? Thanks.

There are two undocumented mt.cfg directives now, OneHourMaxPings and OneDayMaxPings - if you don't set those yourself, they should be defaulting to 10 and 50. Did you send five pings before those last five when it crapped out, within the same hour? That would run you afoul of OneHourMaxPings.

ThrottleSeconds is rather odd at affecting the Trackback throttle: it does nothing to the one hour throttle, but for no particular reason the one day throttle is actually ThrottleSeconds*4000-1, so that if you set ThrottleSeconds to 0, you allow yourself OneDayMaxPings every second (though usually you would expect OneHour to trigger before that).

Ah, thanks Phil. Upping OneHourMaxPings to 100 does the job.

It's also nice to see that MT3 is a lot more robust at sending a load of pings from one post - previous versions used to hang on the "Sending TrackBacks" page and I'd end up with a mess of duplicated and missing pings.