Kiersti_Esparz1

I lead Marketo's Email Privacy and Deliverability Team. We will get this blog updated shortly to work out some of the inaccuracies.

Anastasia, That is bounce is not specific enough to identify the exact cause, this could be IP or domain based. There is an escalation path with Microsoft to troubleshoot that bounce. Please create a Support case so they can troubleshoot to my team for review and escalation to Microsoft if necess...

Dory, I would want my team to look into your concern a little more deeply. I am surprised to see that Marketo is capturing what look like invalid address bounces550 [internal] [oob] The recipient is invalid.550 5.1.1 User unknownfor addresses you are actively communicating with.The behavior you des...

I could point to so many influential women in the public space. Sally Ride is one of my first memories of an awesome woman -> I have her autograph! I met the mayor of San Diego (then a woman) when I was young, that meeting has stayed with me. I remember "The Year of the Woman" in 1992 when Califor...

Dory,I manage the Email Deliverability Team. I would be curious to know why the addresses our bouncing in our system. Does the bounce we receive indicate an invalid address or some other kind of delivery issue? I would look to see if there was a delivery issue that could be resolved like blocking...

Edward, Great post! One clarification is that Marketo moved to MessageSystems servers, away from StrongView, about 2 years ago.Bounce categories remain very similar:Hard BouncesCategory 1 – spam block (Email Suspended=true (for 24 hours)) Category 2 – email invalid (Email Invalid=true) Soft Bounc...

I can confirm that Marketo does employ the List-Unsubscribe header for email sent from our network.The List-unsubscribe header is text located within an email header, generally unseen by the recipient, that email senders can include to provide a safe way to safely unsubscribe. Over the years email r...

Marketo categorizes bounces a little differently than the rest of the industry. The different treatment of Hard Bounces based on the category of invalid address or spam block described in the article above is somewhat unique. This can explain why you may see an email address Hard Bounce in one cam...

Yes, a single dedicated IP can be used across multiple workstations or Marketo subscriptions. The only limitation is that the workstations must be set up in the same datacenter for this to happen. In most cases this is the case for accounts that are looking to share a dedicated IP.

Courtney,The behavior you are describing is related to "out of band" bounce processing. This is not the standard way most email receivers process mail and it displays as having delivered and THEN bounced. This is because the mail server accepted the email initially and sent Marketo an "delivered" ...