Remote Server returned '550 5.2.3 RESOLVER.RST.RecipSizeLimit; message too large for this recipient'
Office 365 or Exchange online problem
Remote
Server returned '550 5.2.3 RESOLVER.RST.RecipSizeLimit; message too large for this
recipient'
Confirm the problem,
Get-Mailbox | fl
mailboxplan,maxsendsize,maxreceivesize
If you have
Get-Mailbox user@mailbox.com | fl mailboxplan,maxsendsize,maxreceivesize
MailboxPlan : ExchangeOnline-1ab122338-4f1a-bac1-c28ff8a1234
MaxSendSize : 0 B (0 bytes)
MaxReceiveSize : 0 B (0 bytes)
Execute the command
Set-Mailbox user@mailbox.com -MaxReceiveSize
55MB -MaxSendSize 55MB
or
Set-Mailbox user@mailbox.com -MaxReceiveSize 150MB -MaxSendSize 150MB
To apply for all users run this.
Get-Mailbox |
Set-Mailbox -MaxReceiveSize 55MB -MaxSendSize 55MB