- Status Closed
- Percent Complete
- Task Type Incident
- Category Any
- Assigned To No-one
- Operating System All
- Severity Low
- Priority Medium
- Reported Version Development
- Due in Version Undecided
-
Due Date
Undecided
- Votes
- Private
Attached to Project: Servperso Systems
Opened by Servperso - 14.03.2021
Last edited by Servperso - 01.07.2021
Opened by Servperso - 14.03.2021
Last edited by Servperso - 01.07.2021
FS#6 - Email spamming issue from customers - billing email impact + port closure
We encountered several problems because the mikrotik of one of our customers found itself open proxy during the month of February.
As a result, and to remedy this in a sustainable way, we have taken the following measures towards our IPs. This does not apply to ip advertised through AS34872
- Change of reverse DNS to isp.servpersosystems.net
- Closure of ports 25, 135 and 139 out (smtp and samba)
- Close ports 1080 and 8080 in in (proxy)
These steps are final, if you wish to send emails we encourage you to use your own / 24.
This incident may impact billing emails. Remember to check the spam folder and mark our emails as “legitimate”. It would help us.
Email feel to flow without issue to gmail now
We also change customer reverse dns to avoid such issue