That maillog excerpt shows mail being delivered just fine..

BTW, what are you using as an LDA, dovecot, courier, something else?

@NickW Not that I'm aware of, but SpamAssassin is on the server. I don't know if that could be a problem or not.

Apr 17 10:46:46 localhost postfix/smtp[7761]: B639A9402D7: to=<email@sbcglobal.net>, relay=none, delay=4189, delays=4189/0.02/0/0, dsn=4.4.3, status=deferred (Host or domain name not found. Name service error for name=sbcglobal.net type=MX: Host not found, try again) - Seem to get this message as well when sending to Yahoo or SBCGlobal.net, also GMail

That's something else entirely. What is configured in your /etc/resolv.conf ?

@NickW There does not appear to be anything inside of /etc/resolv.conf other than comments: Dynamic resolv.conf(5) file for glibc resolver(3) generated by resolvconf(8) - DO NOT EDIT THIS FILE BY HAND -- YOUR CHANGES WILL BE OVERWRITTEN

No problems, what is configured in the dns-nameservers line(s) in /etc/network/interfaces file?

@NickW I have auto lo iface lo inet loopback with auto eth0, auto eth0:0, auto eth0:1, auto eth0:2, auto eth0:3, all with iface inet static, address, netmask, gateway, and at the bottom ethtool -s eth0 speed 10 duplex full autoneg off

so nothing with dns-nameserver ?

Nothing with dns-nameserver mentioned in the file

there you go

that's your problem

Oh

add a line in there for your dns servers, or maybe google's ones, and things should strt working

By doing the upgrade/update; would that have replaced a previously configured file? up until this morning before the update everything was great

I'm guessing things were configured in /etc/resolv.conf before, but the upgrade removed them because they should be in /etc/network/interfaces.. but didn't transfer em

it is kinda dumb

oh

well i appreciate your help big time

but it's not the first time I've seen similar decisions

not a prob

I'll just put it in as an answer

i'm definitely not a server guy lol, so thank you; i will definitely choose your answer

see you back at your question

:)