Address verification

In the comments on my Address Verification in Real Time Ken asks:

are there any legal issues in doing a large number of bulk SMTP transactions where you would connect issue say 20 RCPT TO commands to verify the user then send a RSET and QUIT. Immediatley connect again and do another 20 RCPT TO’s etc…
If you had say 250 thousand email addresses all pointing to the same MX record that would be you continually connecting 12500 times to cleanse your historical email list, then numbers would be small on forward flow as you would check them realtime as they came in.
Could you get into any serious trouble doing this?

I’m not sure there’s anything illegal about doing this. However, it is abusive and most mailservers will block IP addresses doing this.
 

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Have you audited your program lately?

A few months ago, I got spammed by a major brand. I know their ESP takes abuse seriously, so I sent a note into their abuse desk. It bounced with a 550 user unknown. I sent another note into a different abuse address, it bounced. I sent mail into their corporate HQ, it disappeared into a black hole. I eventually connected with their delivery person and he’d not seen hide nor hair of any complaint. Their entire abuse handling system had broken down and no one noticed.
In the recent past, I was dealing with a client’s SBL listing. We were talking about how their fairly clean subscription process ended up with multiple Spamhaus spamtraps on the list. They mentioned bounce handling, and that they’d not been correctly managing bounces for some period of time. Their bounce handling system was broken and no one noticed.
Last year, I was working with another client. They were looking at why some subscribers were complaining about unsubscribes not taking. A bit of poking at different forms and they realized that one of their old templates pointed to an old website. Their unsubscription form had broken and no one noticed.
Another client insisted that their engagement handling removed any addresses that didn’t open or click on mail. But after ignoring their mail for 6 months, they still hadn’t stopped mailing me. Their engagement handling was broken and no one noticed.
Periodic monitoring would have caught all of these things before they became a big enough problem to result in a Spamhaus listing, or recipient complaints, or lawsuits for failure to honor CAN SPAM. Unfortunately, many companies don’t check to make sure their internal processes are working very often.
Email marketing is not set and forget. You need to monitor what is happening. You need to make sure that your processes are still in place and things are still working.

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Should you respond to complaints

David Spinks asks on twitter:

Should you ever contact someone who made an abuse complaint about your newsletter to find out why

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Gmail abuse and postmaster addresses

A long time ago, Steve wrote a post about setting up abuse and postmaster addresses for Google hosted domains. Google has gone through a couple iterations of the interface since then, as you can see by the comment stream.
I checked with some people who have Google hosted domains and they have confirmed that abuse@ and postmaster@ addresses can be set up by creating a group. When you create the group you can then add yourself to the group and get the mail that comes into abuse@ and postmaster@.
 

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