I run two mail servers one postfix and the other exim4, both on Ubuntu.
Any email to a gmail server is rejected with a 550-5.7.1 error,
basically requiring a ipv6 ptr record.
I have known about this problem for a while but used other workarounds.
Recently we have seen more and more people hosting their email on gmail
using this own domains. So I decided it was time to solve the problem
permanently. Unfortunately our IP addresses are provided by our ISPs and
they don't provide ipv6 ptr records.
I solved it with the postfix server by setting up a list of domains to
be to ipv4 only. That works well and is easy to add more domains as I
discover them
Is there a comparable method for exim4? Or some other way of overcoming
the problem? I have Goggled around and the postfix answers came up
pretty easily, I've found very little on exim4.
I did find this web page:
https://github.com/Exim/exim/wiki/How-to-force-IPv4-connections-for-specific-domains-if-IPv6-is-enabled
But I'm not sure how to implement it. I can certainly add a Router and
Transport to the appropriate directory, but where should the domain list
go under conf.d?
--
Rob
begin:vcard
fn:Robert Steinmetz AIA
n:Steinmetz;Robert
org:Steinmetz & Associates
adr:Suite 650;;650 Poydras;New Orleans;LA;70130;USA
email;internet:rob@???
title:Principal
tel;work:504.523.6129
tel;fax:504.581.3219
x-mozilla-html:TRUE
url:
http://www.steinmetznet.com
version:2.1
end:vcard
