Migrated Sites - Can't log in to email

[thedust2010]

All the sites we migrated this weekend are unable to access their email, even through the webmail portal. I've tried resetting passwords, disabling the firewall (IPTables) and all the DNS settings look correct when I go to DNSStuff.com. Any idea why this is happening?

Note: Email is getting sent to the server fine, but we are unable to log in via POP, IMAP or Webmail to be able to view the messages.

NOTE: When I'm logged into the server and I try "telnet localhost 25", I get "Name or service not known". This is not good. I think it's maybe indicative of a much larger problem?

NOTE: OK, latest news: When I disable iptables, I can get email using POP, but webmail and IMAP are still unavailable.

I was able to fix POP through iptables, but the IMAP service seems misconfigured regardless...

 

[thedust2010]

Does anyone think there will be serious problems if I try...

# yum remove courier-imap
# yum install courier-imap

?

 

[thedust2010]

Magically, I think IMAP is now working OK... BUT, I can not log in to webmail. I can retrieve email via POP or IMAP using Outlook, but webmail won't let me in. Thoughts?

 

[blank_page]

Hello,

Your /etc/hosts file should look like this:

127.0.0.1 localhost.localdomain localhost
shared_ip subd.hostname subd

I bet your first line is missing.

 

[thedust2010]

Originally posted by blank_page
Hello,

Your /etc/hosts file should look like this:

127.0.0.1 localhost.localdomain localhost
shared_ip subd.hostname subd

I bet your first line is missing.

Yup, this was EXACTLY the problem. We actually figured this out yesterday at the end of the day. Thanks for your expert insight!