Here, for my config anyway. You can read the docs on how transport file works. Good luck. -ALF
/etc/postfix/maps/transport # Slow transport for AOL # 'slowaol' are configured in master.cf and main.cf aol.com slowaol:aol.com -Angelo Fazzina Operating Systems Programmer / Analyst University of Connecticut, UITS, SSG, Server Systems 860-486-9075 -----Original Message----- From: owner-postfix-us...@postfix.org [mailto:owner-postfix-us...@postfix.org] On Behalf Of Fongaboo Sent: Thursday, December 1, 2016 5:02 PM To: Postfix users <postfix-users@postfix.org> Subject: RE: Banned by Yahoo? This sounds like a great idea. Where do you actually specify AOL's mail servers for this rule? On Thu, 1 Dec 2016, Fazzina, Angelo wrote: > Hi, I throttle my traffic to AOL and HOTMAIL, maybe you need to do the same > for Yahoo. > I had to lookup each ISP's limits to configure it in Postfix to help with all > the mail to them getting deferred. > > I must say it has been years since users complained about mail not getting > delivered to those domains, and it used to be weekly. > -ALF > > > Main.cf > slowaol_destination_recipient_limit = 10 > slowaol_destination_concurrency_limit = 2 > slowaol_destination_rate_delay = 30s > > master.cf > slowaol unix - - n - 1 smtp > > > -Angelo Fazzina > Operating Systems Programmer / Analyst > University of Connecticut, UITS, SSG, Server Systems > 860-486-9075 > > -----Original Message----- > From: owner-postfix-us...@postfix.org > [mailto:owner-postfix-us...@postfix.org] On Behalf Of Fongaboo > Sent: Thursday, December 1, 2016 3:36 PM > To: Postfix users <postfix-users@postfix.org> > Cc: d...@dinocovelli.com; mec...@mechno.com > Subject: Banned by Yahoo? > > > I've been getting a lot of these errors for mail sent to Yahoo all of a > sudden: > >> 421 4.7.0 [TSS04] Messages from 24.105.170.68 temporarily deferred due to >> user complaints - 4.16.55.1; see >> https://help.yahoo.com/kb/postmaster/SLN3434.html (in reply to MAIL FROM >> command)) > > The included link states: > >> Error: "421 4.7.0 [XXX] Messages from x.x.x.x temporarily deferred due >> to user complaints - 4.16.55.1" when sending email to Yahoo >> >> This error indicates Yahoo is seeing unusual traffic from your IP >> address and/or that emails from your mail server are generating >> complaints from Yahoo Mail users. > > I checked MXDomainTool and we're not on any blacklists (not that I would > expect that to be related). But I did a thorough check for any config > mishaps that might have us open relaying, but we are closed up tight. > > However we do have virtual aliases on hosted domains that ultimately point > to yahoo.com addresses. Undoubtedly, I can reference instances of spam > received to the virtual and then forwarded on to Yahoo's mailserver from > there. > > But can they really blame the middleman (us) for mail that is just passing > through our hands? I mean, I understand it's possible for them to do > whatever they please. But mostly just looking for a sanity check that I am > corectly ascertaining what is happening and what they are doing? > > I saw some earlier posts on a similar issue with Yahoo, but it related to > rate-limiting rather than 4-hour bans. Not sure if it was the same > instigating factor but they've just changed their policy... > > Any ideas welcome... But also looking for a sanity check on one thing I > was thinking of trying: > > Find any virtual aliases that point to yahoo.com or ymail.com addresses... > replace the aliases with a virtual MAILBOX that *forwards* to Yahoo. Then, > as per my configuration, any mail destinated for yahoo will be scanned by > Maia-Mailguard/SpamAssassin before it is allowed to leave for Yahoo. > > My hope would be that once yahoo-destinated spam passing through my server > slows down they will unban. > > TIA for sanity checks! > > > FONG >
