I cannot send any email, why ?

Why do I get an error message “Error while writing spool file” ? I cannot send any email at all !! Please help ASAP !!!

It seems that it is a server sided problem but send us your SMTP logs anyway. Go to menu Tools->Settings->Advanced->Logging and check “SMTP” under the problematic account. Then restart eM Client, try to simulate the issue and send us (with reference to this topic) the logs using the same logging settings window. Thank you.