We just want to prevent residential email hosting. Sent from my iPhone
> On Feb 6, 2022, at 6:12 PM, Ron M. <[email protected]> wrote: > > > Gonna need more than just 25/tcp (SMTP). Will also need 465/tcp (SMTPS) and > 587/tcp (SUBMISSION)... and you'll need to tie it to the user's IP/block > obviously.... otherwise you'll have a LOT of unhappy users. > > Further commentary can be found here: > https://www.mailgun.com/blog/which-smtp-port-understanding-ports-25-465-587/ > > > >> On Sat, Feb 5, 2022 at 10:10 PM Steve Jones <[email protected]> >> wrote: >> Ive been intending to block it inbound/outbound for some time. in 2022, >> other than mail server theres no legitimate reason to use that port. >> >> >>> On Sat, Feb 5, 2022 at 9:22 PM TJ Trout <[email protected]> wrote: >>> Yes, or on the customer's router, either way. We block 25 but I'm not sure >>> that is customary nowadays? >>> >>>> On Sat, Feb 5, 2022 at 5:45 PM Chuck McCown via AF <[email protected]> wrote: >>>> Would that be something you would configure in the border/edge router? >>>> >>>> From: TJ Trout >>>> Sent: Saturday, February 5, 2022 6:32 PM >>>> To: AnimalFarm Microwave Users Group >>>> Subject: Re: [AFMUG] Blocking email servers >>>> >>>> block port 25 outgoing >>>> >>>> On Sat, Feb 5, 2022 at 5:23 PM Chuck McCown via AF <[email protected]> wrote: >>>>> What is the best way to prevent customers from running their own email >>>>> server? >>>>> >>>>> -- >>>>> AF mailing list >>>>> [email protected] >>>>> http://af.afmug.com/mailman/listinfo/af_af.afmug.com >>>> >>>> -- >>>> AF mailing list >>>> [email protected] >>>> http://af.afmug.com/mailman/listinfo/af_af.afmug.com >>>> -- >>>> AF mailing list >>>> [email protected] >>>> http://af.afmug.com/mailman/listinfo/af_af.afmug.com >>> -- >>> AF mailing list >>> [email protected] >>> http://af.afmug.com/mailman/listinfo/af_af.afmug.com >> -- >> AF mailing list >> [email protected] >> http://af.afmug.com/mailman/listinfo/af_af.afmug.com > -- > AF mailing list > [email protected] > http://af.afmug.com/mailman/listinfo/af_af.afmug.com
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