There are 5 lead strings in Marketo that are related to troubled email delivery.
Here are my questions starting with the Email Suspend fields:
Currently, Marketo determines what response codes are classified as Email Suspended. Marketo sets the Email Suspended Field to TRUE and sets the suspend time as 24 hours on behalf of all clients.
The Email Bounced and Email Bounce Soft are fully searchable
The Email Suspended fields are not fully searchable.
I have adopted a work around to try an remove Hard Bounces that show up in the Email Suspended Cause field for the following text. If any are found, the email is marked invalid.
|access denied||no unauthenticated relaying||rejecting|
|Bad email||non-existent||requires server authentication|
|blacklisted||not allowed||source blocked|
|blocked||not authenticated||unable to verify destination address|
|connection refused||not available||unauthenticated mail|
|email bad||permanent failure||unavailable|
|invalid||recipient address rejected||unknown recipient|
|invalid address||recipient invalid||unknown user|
|invalid recipient||recipient not||user address|
|invalid user||recipient rejected||user invalid|
|Mailbox unavailable||recipient unknown||user not|
|message refused||refused||user unknown|
|no longer||reject||verification failed|
Looking forward to hearing the Community's thoughts.
You can post some of these as Ideas to get Marketo to act.
Here are some recent links to the documents I mentioned.
RE: Email suspended not clearing -- so that you know that it happened and when (at least the most recent occurrence)
There is no timestamp field for Email Suspended - therefore, unless we search in the activity log, we won't know when this happened. I too find it very odd/confusing that this field isn't reset after 24 hours.