I have in my company a exchange 2003 server running on Windows server 2003 sp2.
I recently moved our the DNS and MX records to our domain provider (123-reg) as this was all open recursive DNS on our own servers.
123-reg have confirmed i've copied everything over correctly a couple of days ago.
Since making the change. Gmail users cannot email our domain. We can successfully email gmail accounts though. (and all other emails inbound and outbound seem to be working fine)
After checking the SMTP logs, I can see that the mails are getting to the server, but they are not arriving in users mailboxes.
I have GFI mailsecurity installed. I cannot get into this as i don't have a password (awful handover!). I have tried disabling GFI services but that doesn't make the mails appear either. I've never used GFI, so if anyone has ideas here, that would be helpful.
Thanks very much for reading.