Everything I have researched leads me to believe this is normal, however I wanted to see if I could get some feedback that will confirm. What makes me so confused is that I had not ran into this as an issue yet, which completely surprises me.
For what appears to be everyone in the company, when they send an email to an outside domain, it goes through the normal process. But when it gets to the second step, the size increases fairly drastically. The bigger the email/attachment, the more it increases. An example email from earlier today with a sizable attachment:
1.EventId: RECEIVE | Source: STOREDRIVE | TotalBytes: 17104978
2.EventId: TRANSFER | Source: ROUTING | TotalBytes: 23395934
3.EventId: SEND | Source: SMTP | TotalBytes: 23395934
Should I really be seeing a 6MB increase here from the ContentConversion?
The reason I'm baffled is because I work for a MSP and work with dozens of Exchange environments but have not once encountered a problem where this increase in size is making the email get blocked. In this particular instance, the receiving domains caps at 20MB, so it's rejecting our email. I would have thought I'd seen this before, but every day is new I guess.