On 1/7/19 2:13 PM, Grant Taylor via Mailman-Users wrote: > I think Sendmail (and other MTAs that I've tested) default to > user@host.domain too. But that's just a default that's easy to change.
LOL. Not on IRIX it wasn't. > Or are you saying that you used > MX records to route email to a different machine, possibly a mail hub? That. If you want a single MX accepting mail for the Internet, you have to have virtual domains on it for your every host, and make sure SMTP and/or DNS reliable routes addres@host.domain to address@domain. Which may be easier than I think, I never tried... Granted we're talking "just one" @list.domain here. Well, maybe also @list.domain... and then by strong mathematical induction we arrive at the above. > B) I would hope that other things like SPF / DKIM / DMARC would help > reduce this considerably. But I'm not going to hope enough to hold my > breath. But then you wouldn't need it in mailman: if it's spoofed as per dmarc, you just reject it regardless ot its destination. > C) ¯\_(ツ)_/¯ I suspect it's highly mailing list dependent. - I > personally like to do as much as possible during the SMTP transaction. > So if there is a reasonable way to apply some Mailman filtering logic to > applicable messages, why not do it? Like I said, it's probably whooping 10 extra lines of python -- as long as you use postfix. The question is how much work it is to support other MTAs. -- Dimitri Maziuk Programmer/sysadmin BioMagResBank, UW-Madison -- http://www.bmrb.wisc.edu
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