[Users] Issue with ipv6 mail checking timing out

[Chris Schrauben]

The last two days I have been unable to fetch mail (timed out) from my
Gmail (1) and Outlook (4) accounts. At first I was thinking my ISP
(their service is not so good). I did some troubleshooting. These are
POP3 accounts. I will use Gmail as the example, results are the same
with Outlook using both pop-mail.outlook.com and outlook.office365.com.

'telnet pop.gmail.com 995, result with "Trying
xxxx:xxxx:xxxx:xxx::xx...trying to connect"

Using ping -4 pop.gmail.com to get the ipv4 address I try 'telnet
xxx.xxx.xxx.xxx 995 and get "Trying xxx.xxx.xxx.xxx... Connected to
xxx.xxx.xxx.xxx."

I don't see a way to force ipv4 by account, I do know there is a
--disable-ipv6 configure option. So I rebuilt claw-mail with that
option. All is well... for now. 

Has anyone else experienced this issue (works with -ipv4, not with
-ipv6).

Before this I was having constant timeout problems with Gmail, sometimes it works some times it doesn't. I am now thinking this
may have been the reason, when it worked an -ipv4 address was used,
when it didn't it was -ipv6. 

Thanks, Chris