Email Campaign Messages Automatically "Opting Out"

[ErinOlson]

I sent out three email campaigns based on the same email template, two worked fine, The third was sent to 26 targets, and immediately after sending 22 of them had "opted out". The fact that the email was not viewed, and was immediately opted out of leads me to believe that they're being blocked by a spam filter or something to that effect.

The email did go through fine to four contacts, three viewed it, one clicked through on a link.

I tried removing all tracker urls and simply using links, removing the opt out link completely, and resent to the "opt out" contacts, but the same thing happened again.

I am at a loss here. Any suggestions why these emails are not going through? FYI - I am running Version 4.5.1d (Build 1273)

[heytimc]

Bump big time.

Did this every get sorted? We've just had the same issue with 4,000 messages. All senders have been moved into OptOut? We checked that all the targets had "Opt Out" switched off on their record before the message was sent. Now it is on for all targets bar about 5 who did actually read their message at 23:00 (!) If the message has not been read how can it be opted out.

You know Sugar has some great Kung Fu going on behind the scenes but the documentation is a little lacking, grasshopper - any clues people? Very happy to share our findings, when we find any.