Currently having a issue with one user when sending to Bulk external addresses. User had setup a distribution list of 300 contacts and when sending a mail (with pdf attachment) she received a failure
"Has been delayed for some or all of the intended recipients. " and about 100 addresses were listed. Once she copies these listed addresses into a new mail and sends it goes through ok. I thought initially that this was a corrupt list, so we created the list in Exchange but that didn't work. Yesterday the user had to send another mail to the 300 contacts and she copied the list from excel into a mail (300 users with 1mb pdf attachment). This morning she got a failure with mail delayed for about 100 users. When i checked in mail Marshal i noticed that the mail she sent was split (i.e. as if she had sent the mail to 2 separate lists) The failures are coming from the first list from mailmarshal but not all the contacts failed!
Again, once she copies the failed list into a new mail it will work.
Has anyone any ideas as to why this is happening? User's profile has been recreated, is now on a new PC. Let me know if you need more info