Dear Mark and all others, many thanks for your help so far. I am just starting to setup this subdomain, Mark advised me to.
One thing regarding the Reverse DNS entry: How can it be necessary, to set up this record? Just imagine a server, where multiple domains are hosted, but the server only has one IP. If the ISPs really require rDNS entries, which suit to the mail originating domain, one would always need a 1:1 mapping of IP and domain, preventing multiple domains on a one-IP server, isn't it? Kind regards, Sascha. 2016-01-26 0:48 GMT+01:00 Mark Sapiro <[email protected]>: > On 01/25/2016 03:27 PM, Sascha Rissel wrote: > > Hi Mark! > > > >> In simple terms, it claims your mail server is not properly configured. > >> I don't know what your Mailman server's domain name is, but it appears > >> from the error message that its IP is 62.75.175.182 and that IP has an > >> rDNS PTR record to euve51864.serverprofi24.de. > > > > this is all pretty correct. > > > > "euve51864.serverprofi24.de" is the natural name of the vServer, I am > > running. > > I don't have a real domain configured, since I mainly just use it for > > mailman. > > > As I indicated in a follow-up post web.de is apparently not allowing > 'generic' domains any more. > > > > I configured all Mailman lists to use something like <list name>@ > rc-worms.de, > > where <rc-worms.de> is the www domain of my sports club, whose > > administrator I am. > > For better readability I named and configured all lists this way, to use > < > > [email protected]>, <[email protected]> as exlicity reply-to address > and > > so on. > > > > This worked pretty well for years. > > Did it now turn into a problem, that reply-to address and domain () bear > a > > different IP/rDNS result? > > > That is not the problem as far as I can tell. The problem is that the > specific domain you are using for your mail server, > euve51864.serverprofi24.de, is now seen as a 'generic' name and is not > acceptable to web.de. > > > > Is there something you could suggest in this case? > > > > Should I maybe configure a subdomain on my vServer, like < > lists.rc-worms.de>, > > from which the mails will be send from and can bear own DNS config? > > > Yes. lists.rc-worms.de should be good. I would have suggested just > rc-worms.de, but that already has an A record pointing to a different > server. > > The issue you will run into is that while you can configure the MTA to > identify itself as lists.rc-worms.de and you can create the A record for > it, you don't control the rDNS PTR record for 62.75.175.182. That's > controlled by intergenia.de. It may be no problem to get them to change > it, but it could be a stumbling block. You'll find out when you ask. > > With respect to the underlying issue here, ISPs are getting more and > more fussy about only accepting mail from what they consider to be real > mail servers. Trying to run a mail server with a dynamic IP or an IP > with a 'generic' host name is just not possible if you want reliable > acceptance of your mail. > > -- > Mark Sapiro <[email protected]> The highway is for gamblers, > San Francisco Bay Area, California better use your sense - B. Dylan > ------------------------------------------------------ > Mailman-Users mailing list [email protected] > https://mail.python.org/mailman/listinfo/mailman-users > Mailman FAQ: http://wiki.list.org/x/AgA3 > Security Policy: http://wiki.list.org/x/QIA9 > Searchable Archives: > http://www.mail-archive.com/mailman-users%40python.org/ > Unsubscribe: > https://mail.python.org/mailman/options/mailman-users/mailman%40rissel.it > ------------------------------------------------------ Mailman-Users mailing list [email protected] https://mail.python.org/mailman/listinfo/mailman-users Mailman FAQ: http://wiki.list.org/x/AgA3 Security Policy: http://wiki.list.org/x/QIA9 Searchable Archives: http://www.mail-archive.com/mailman-users%40python.org/ Unsubscribe: https://mail.python.org/mailman/options/mailman-users/archive%40jab.org
