SMTP IP Connection Restrictions and 530 Banner

Discussion regarding the Standard version.
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brised
Posts: 2
Joined: Tue Mar 02, 2021 3:16 pm

SMTP IP Connection Restrictions and 530 Banner

Post by brised » Tue Mar 02, 2021 3:32 pm

When I setup IP connection restrictions to block a sub-net from trying to authenticate and connect to the server this works effectively but generates a banner back to the source system revealing the server name and MailEnable version details. I am running version 10.31. I would prefer to not give the spammer even more details about the server for them to try their best to get in :D .

Any suggestions welcome

Thanks Brian

MailEnable-Ian
Site Admin
Posts: 9395
Joined: Mon Mar 22, 2004 4:44 am
Location: Melbourne, Victoria, Australia

Re: SMTP IP Connection Restrictions and 530 Banner

Post by MailEnable-Ian » Tue Mar 02, 2021 11:42 pm

Hi,

The latest beta release on our beta page contains a change for this for the returned response for denied access. It will now respond like the example below masking the server host name and MailEnable version details:

530 IP x.x.x.x denied access to SMTP at 03/03/21 10:39:34
Regards,

Ian Margarone
MailEnable Support

brised
Posts: 2
Joined: Tue Mar 02, 2021 3:16 pm

Re: SMTP IP Connection Restrictions and 530 Banner

Post by brised » Wed Mar 03, 2021 8:53 am

Great news, thanks Ian for the update, this will help in securing the hosts.

Regards
Brian

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