Greymail unsubscribe issue: 400 bad request

[keithsauer507]

Have an issue where clicking on the unsubscribe link at the top of an email.  It takes you to a Cisco branded page (url begins with secure-web.cisco.com) but it just says 400 Bad Request.

We've seen this unsubscribe feature a real hit or a miss.  Its very inconsistent.  Does anyone else in this community use this graymail feature or did you find its inconsistencies not worth it and remove it altogether?

[Libin Varghese]

Hi Keith,

One possible reason for the error could be the URL length being greater that 2000 bytes which is currently being tracked under the below defect.

https://bst.cloudapps.cisco.com/bugsearch/bug/CSCuy27582/?reffering_site=dumpcr

It would also help to review the original URL prior to it being re-written. You can choose to archive a copy of the original email from the incoming mail policy graymail configuration.

Thanks

Libin Varghese

[keithsauer507]

Ok how about those emails that say unsubscribing in progress... 

I have some where it gives me a success message, many that just give me an infinite 'in progress' message (which never completes) and some that are http 400 bad request.

[Libin Varghese]

Possible unsubscribe issues that will not be automatically processed from through the ESA may be:

• Authorization/Account information needed
• Proxy or other security appliance/software is involved in the URI/unsubscribe chain
• Host/domain may not have proper mailer setup that handles unsubscribe requests.

So the response would vary from URL to URL.

I would recommend opening a TAC case if you would like help determining the exact cause for a specific URL.

Thanks!

Libin V