Very Slow outbound mail delivery on EXC 5.5 SP4

[FlipFlop1974]

Hi friends,

we have a worldwide exchange environment. That are around 70 servers running NT4 with Exc 5.5 incl. SP4. 67 of the 70 are working very fine, but the other 3 have incredible problems with receiving mails. The topology of the mailnetwork is: we have 1 cluster in vienna wich is responsible for all mails comming to our domain, the cluster forwards all mails to the server wich contains the recipient. So each server has his own site.

As written, on 67 servers (all are identic configured) the system is working very well. For the other 3 the mailtransport is very very slow, many mails stay for many hours in the queue and nothing happens with them. Just 4 till 5 mails per day get through.
A network problem can be excluded, the performance to the servers is acceptable.

Does anyone has an idea?

greets mike

 

[fuego007]

First, check the MTA queues on the servers. If there are messages queued between the servers, there is probably a corrupt message that is common to them.

Try restarting the MTA on each of the affected servers. If this doesn't help, stop the MTAs and run the MTACHECK utility on each one twice. If that doesn't help, rebuild the MTAs. You can find info on doing this at support.microsoft.com. Use the advanced search to look for "rebuild MTA".