Get-MailboxPlan | fl name,maxsendsize,maxreceivesize,isdefault
Name : ExchangeOnline-xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
MaxSendSize : 35 MB (36,700,160 bytes)
MaxReceiveSize : 36 MB (37,748,736 bytes)
IsDefault : False
Name : ExchangeOnlineDeskless-xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
MaxSendSize : 35 MB (36,700,160 bytes)
MaxReceiveSize : 36 MB (37,748,736 bytes)
IsDefault : False
Name : ExchangeOnlineEnterprise-xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
MaxSendSize : 35 MB (36,700,160 bytes)
MaxReceiveSize : 36 MB (37,748,736 bytes)
IsDefault : True
Get-Mailbox username | fl mailboxplan,maxsendsize,maxreceivesize
username ExchangeOnline-xxxxxxxx-xx... 35 MB (36,700,160 bytes) 36 MB (37,748,736 bytes)
Set-Mailbox username -MaxSendSize 50MB -MaxReceiveSize 51MB
Set-MailboxPlan ExchangeOnline-xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx -MaxSendSize 50MB -MaxReceiveSize 51MB
Set-MailboxPlan ExchangeOnlineDeskless-xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx -MaxSendSize 50MB -MaxReceiveSize 51MB
Set-MailboxPlan ExchangeOnlineEnterprise-xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx -MaxSendSize 50MB -MaxReceiveSize 51MB
Create Testing attachment file:
fsutil file createnew C:\45GBTest 47185920