44 votestry this instead · 6 comments · Office 365 Admin » Exchange Admin · Flag idea as inappropriate… · Admin →
An error occurred while saving the commentITzik commented
Hi, what are the max recipients limit of the SMTP relay option? is it the same max 500 limitation of mailbox submission? Thanks.
I have a customer got realy NDR of "Too Many Recipients" while tryng to send a message with 450 recipients.