Hi, I just Installed Zimbra to replace an old exchange 5.5 server. Everything is working fine except email to certain domains, hotmail, gmail. I have messages queued with an error that states "host refused to talk to me: 421 smtp service not available" From what I understand this is normally from no reverse dns entry. We do have a reverse dns entry for oldserver.mydomain.com and I have just changed it to newserver.mydomain.com. Maybe I need to wait for it to propogate, but as I understand it, it should work either way since the domain and ip are correct. My mx record, spf record, and reverse dns all point to newserver.mydomain.com, but if I run an smtp check my server answers 250 mydomain.com instead of 250 newserver.mydomain.com. Is this a problem?
Any help would be greatly appreciated, and by the way I love Zimbra