Google Mail: from forwarding to active polling

I really liked their feature, that I can forward the incoming e-mail to my Google Mail account (and the Google Mail / Google Apps one as well) to my main e-mail account.
But they poke the "Return-Path:" mail header field then, and that makes it unreasonable for use with procmail.
So for the time being I switched them from forwarding to getting polled by fetchmail with SMTP-ing to my standard account.
The new problem to face then: My mobile phone Internet Access does not allow me to do IMAP and SMTP, and most corporate networks just as well. So maybe I let my own server in my home office do this. The downside of that: sometimes messages do not get successfully sent out, and I will never notice them, if that occurs on my (home office) server. In my experience that only occurs to messages with weird sender addresses and so forth – but you never really know that.
Well, we shall see! More valuable experiences to make.

suffering from e-mails getting bounced because of some RBL listed SMTP server

My domains are hosted by United-Domains.de, my mail box and web space are hosted by another provider.
Provider#2 uses an RBL list, which has a "bad reputation entry" concerning the SMTP server of provider#1.
This is how I finally understood my situation today, after having suffered from e-mails getting bounced for quite a couple of months. What a luck, provider#2's hotline isn't any expensive at all.

I had a calm and relaxed conversation with the highly experienced supporter at the other end, and he explained me how to remove the RBL checking for my e-mail addresses. He warned me to do so, because that would increase the amount of SPAM arriving at my account, but I praised their SPAM detection and flagging of the e-mail headers and also my own procmail rules.

Now, I am very positive, my suffering found an end.