reply to spider62
Re: [TWC] SORBS blacklisting a RR IP 18.104.22.168 -> cpe-174-111-058-063.triad.res.rr.com
That's a dynamic / residential, you-are-not-supposed-to-be-sending-smtp-from-here address. Pretty much no one on earth is going to allow you in.
Now, if you are submitting email from a "mail user agent" (i.e. Outlook) to an email server (a "mail transfer agent") -- i.e. your company's mail server... a) you shouldn't be doing this on port 25, but outlook is brain dead here, b) you should be authenticating with this server so it knows you're not John Q. Public trying to relay SPAM. (Really, you should be using a VPN and not have to worry about this.)
| So the plot thickens,|
I have been using the same process for over three years.
I have configured my outlook to use an IMAP through my work address.
Should I use the TWC SMTP to outbound my email?
That's a discussion to have with your system administrator. If I were the admin, you'd be using encryption, user authentication, and not port 25.