We have a mail server and trying to send mail to receipient in Zimbabwe
For the last few days they can not receive mail from us but can from others.
Thats why they thing the fault is with our server
I have made a MX Lookup on their domain. Please see attached
I then checked our logfiles:
Some days ago we send and their received. Our SMTP Server used their SMTP IP: 220.127.116.11
We can send and they can receive
Now today I try to send again but it now goes to their IP: smtp:18.104.22.168
I have made some lookups on the 2 SMTP Servers and on mxtoolbox the last one gets time out.
My First Question:
My Conclusion is therefore that its their problem.
Is this right?
My Second Question:
How can it be that our SMTP Server one day uses one of their IP and the next day a different?
I guess this is outside our power as we do not have our own DNS Server but uses our ISP's DNS Server
Can anyone comment on this please so I can forward the right conclusion to them