Josh Smift writes: > TC> I do this. I run a Virtual Host at Dreamhost (Although it could be one > TC> a digitalocean, prgmr.com or whatever virtual hosting provider you > TC> prefer) that acts as an inbound and outbound mail relay for the > TC> IMAP/SMTP server I run at home. > > Ja, so this is not entirely unlike what I'm doing. The new problem I ran > into is that when I send mail through it from my phone, my phone has a > T-Mobile IP address, and ran afoul of > http://www.spamhaus.org/pbl/query/PBL1585192: > > 172.56.0.0/16 is listed on the Policy Block List (PBL) > > Outbound Email Policy of T-Mobile US for this IP range: > > It is the policy of T-Mobile US that unauthenticated email sent from > this IP address should be sent out only via the designated outbound mail > server allocated to T-Mobile US customers by their email provider > (Hotmail, Gmail, ...). To find the hostname of the correct mail server > to use, customers should consult the original signup documentation for > their email account or contact their email provider. > > So, if I send mail from my T-Mobile IP address, through any non-T-Mobile- > approved server, this policy causes my messages to get tagged as spam. > (Because that T-Mobile IP address is in the Received: headers, I guess? > Maybe I'm mis-understanding the situation here.)
Ideally, if someone is using the Spamhaus PBL to reject mail or as a factor in spam scoring, they would be using it only for connections to port 25 (and encouraging clients to use port 587 with SMTP authentication for submitting mail) and only in relation to the client IP address that is connecting directly to their mail server, not any IP address that appears in Received: headers (in that case, even mail sent from a T-mobile IP through T-mobile's mail servers would get treated as spam). But not everyone who runs a mail server is careful about thinking through the implications of their spam-filtering decisions. You shouldn't be having this problem with any mail server you connect to, since only some sites use the PBL. _______________________________________________ Tech mailing list Tech@lists.lopsa.org https://lists.lopsa.org/cgi-bin/mailman/listinfo/tech This list provided by the League of Professional System Administrators http://lopsa.org/
