Soft Bounces-Now What Do I Do?

[Anonymous]

We sent an international mailing to 200 recipients and saw 52 soft bounces.  From reading the help articles regarding soft bounces I am seeing that since this means that there is a temporary technical issue on the recipients end which wouldn't exclude the recipients from future mailings and Marketo is no longer sending that particular email.  With that in mind, my thoughts are to start a second campaign to try and resend to the individuals who were soft bounced but I'm not seeing any information on if that is good, bad, how long you should wait, etc.  

How do you handle soft bounces?

[Anonymous]

Marketo will retry a soft bounced message for up to 4 hours, at which time it will become permanent.  How long ago did you send the email?

[Anonymous]

It was sent 28 hours ago. 

[Vlada_Prasolova]

I am experiencing the same problems with soft bounces now. 
Moreover, i've already emailed these customers from MailChimp and now Marketo tells me 15 out of 20 recipients are soft-bounce
how's that possible?
do i have to try to resend the email, or Marketo will try to deliver it for some time?