Critical bug : SMTP blocking can not block catch all users from receiving or sending Emails

Problem reported by Nicolas Nicolas - 2/17/2017 at 10:41 PM

Submitted

We have a Smarter Mail (15.x and 14X) with Enterprise license, we have so many domains on our servers.
The issues is that when we block one of our users’ domain e.g. domain.com in SMTP blocking (setting>> Block type : EHlo domain , Direction : both) it just block the existing users from receiving emails but catch all accounts and also domain aliases are still receiving emails. That means if you send an email to info@domain.com the message will be rejected but if you send email to a none existing address such as fake@domain.com it would be received by the catch all address. some of our clients are using this bug to get through the SMTP blocking and forward all of their received mails to another email address. So, we still have incoming and outgoing emails for blocked domains.

Please check this issue and tell us how we can fix this importantbug.

Thanks for your soon reply

Nicolas

7 Replies

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Matthew Leyda Replied

2/19/2017 at 9:57 AM

Nicolas,
You can disable Catch All functions by domain. Go here for info http://portal.smartertools.com/kb/a2695/enable-or-disable-catch-alls.aspx
By definition "Catch All" is just that. It collects every thing that is out of the ordinary.

Kendra Support http://www.kendra.com support@kendra.com 425-397-7911 Junk Email filtered ISP

Nicolas Nicolas Replied

2/20/2017 at 9:08 AM

Dear Matthew Leyda :

Thanks for your reply.

We know how to disable catch-all feature.

We have a shared hosting mail server and we can not ask our clients to not use catch-all feature,because of this bug!

The catch-all feature should be enabled for all mail domains, so we expect SmarterTools to show us a logic solution or fix the bug in future updates.

Nicolas Nicolas Replied

2/25/2017 at 7:30 AM

Unfortunately there isn't any reply for 8 days.
We have sent several emails,but still didn't get any answer.

Matthew Leyda Replied

2/25/2017 at 4:02 PM

Nicolas,
I looked into it. You can disable Catch-all by domain. Just edit the Domain Settings, then remove the check mark for the catch-All Alias on the features tab.

Kendra Support http://www.kendra.com support@kendra.com 425-397-7911 Junk Email filtered ISP

Nicolas Nicolas Replied

2/28/2017 at 8:29 PM

Matthew Leyda

why you repeated same answer twice?!
I said before that we know how to disable catch-all account! our customers need catch-all account and need this feature.

Please let the SmarterTools experts to check this bug and tell us some technical solution.

Matthew Leyda Replied

3/1/2017 at 1:24 AM

Unless someone else has a answer you may need to open a support ticket with SmarterTools.

Kendra Support http://www.kendra.com support@kendra.com 425-397-7911 Junk Email filtered ISP

Curtis Kropar www.HawaiianHope.org Replied

3/1/2017 at 5:45 PM

Nicolas,
In case you did not understand, what Matthew is saying is that you can keep the catch all for the entire server, but disable it ONLY on the domain that you are trying to block.

Your last responses sounds like you think it will turn it off for the entire server. It will still work for everyone else, none of your other customers will be affected.

This can be helpful temporarily.

www.HawaiianHope.org - Providing technology services to non profit organizations, low income families, homeless shelters, clean and sober houses and prisoner reentry programs. Since 2015, We have refurbished over 11,000 Computers !

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