Subj : Re: Not able to recieve mail To : All From : Mike Roberts Date : Thu Jan 31 2019 19:18:38 Date: Sun, 05 Apr 2009 16:42:00 -0400 From: Mike Roberts To: HECTOR SANTOS Subject: Re: Not able to recieve mail Newsgroups: win.server.smtp.&.avs Message-ID: <1238964120.46.1238864843@winserver.com> References: <1238864843.46.1238817288@winserver.com> X-WcMsg-Attr: Rcvd X-Mailer: Wildcat! Interactive Net Server v7.0.454.5 Lines: 132 Hello Hector, thanks for Your response. Here is a copy from my Log. Even If I totally understood, I would not know how to fix this problem with mail from Yahoo. Mike 20090403 21:11:42 00000043 ------------------------------------- 20090403 21:11:42 00000043 version : 2.10 / 1.63 20090403 21:11:42 00000043 calltype : SMTP 20090403 21:11:42 00000043 state : rcpt 20090403 21:11:42 00000043 cip : 98.136.44.48 20090403 21:11:42 00000043 cdn : n76.bullet.mail.sp1.yahoo.com 20090403 21:11:42 00000043 from : tnel003@yahoo.com 20090403 21:11:42 00000043 hdn : n76.bullet.mail.sp1.yahoo.com 20090403 21:11:42 00000043 rcpt : mike.roberts@holodeck.myip.us 20090403 21:11:42 00000043 ruid : 1 20090403 21:11:43 00000043 sapfilter : pass (time:31) 20090403 21:11:43 00000043 saprbl : pass (time:47) 20090403 21:11:43 00000043 sapspf : none (time:16) 20090403 21:11:43 00000043 sapcep : disabled 20090403 21:11:45 00000043 DNS Error : 10061 20090403 21:11:45 00000043 sapcbv : rejected - can not resolve yahoo.com 20090403 21:11:45 00000043 result : reject (0) 20090403 21:11:45 00000043 smtp code : 452 20090403 21:11:45 00000043 wcsap finish (2141 msecs) 20090403 21:14:12 00000044 ------------------------------------- On 2009-04-04 11:06 AM, HECTOR SANTOS wrote to Mike Roberts: -> Mike Roberts wrote: -> > I am able to send out internet email, but when I try sending to my BBS, I do -> > not get the mail. Here is what I am seeing in my logs, How can I fix it, I think -> > it is a spam blocking problem, but do not know how to fix it. -> > -> > Mike -> > -> > 20090403 22:11:14 (07D4) MAIL FROM: ... Sender -> > validation pending. Continue. -> > 20090403 22:11:16 (07D4) RCPT: Return Path not verifiable: -> > (Rejected by WCSAP CBV)! -> -> The WCSAP*.LOG file will tell you the details. But it was CBV - -> Callback Verification. -> -> WCSAP tried to call back the xxxxxxxxx@yahoo.com and YAHOO didn't like -> it. Why? The WCSAP*.LOG session log for this will tell ya. -> -> It may be hard to follow but on a busy system the log lines will mixed -> with all current SMTP sessions. So you need to make sure you group -> the right lines together and thats done by the connection ID, column -> #3 in the log: -> -> date time connection_id string -> -> You will be looking for the SAPCBV attempts. -> -> Here is an 2005 log example I have on hand for yahoo: -> -> 20050121 10:08:30 0001ea94 sapcbv : total mx records: 5 -> 20050121 10:08:30 0001ea94 try mx : mx1.mail.yahoo.com ip: -> 67.28.113.11 -> 20050121 10:08:30 0001ea94 # connecting to 67.28.113.11 -> 20050121 10:08:30 0001ea94 S: 220 YSmtp mta154.mail.re2.yahoo.com -> ESMTP service ready -> 20050121 10:08:30 0001ea94 C: NOOP WCSAP v2.01 Wildcat! Sender -> Authentication Protocol http://www.santronics.com -> 20050121 10:08:30 0001ea94 S: 250 OK -> 20050121 10:08:30 0001ea94 C: HELO mail.winserver.com -> 20050121 10:08:30 0001ea94 S: 250 mta154.mail.re2.yahoo.com -> 20050121 10:08:30 0001ea94 C: MAIL FROM: <> -> 20050121 10:08:30 0001ea94 S: 250 null sender <> ok -> 20050121 10:08:30 0001ea94 C: RCPT TO: -> 20050121 10:08:30 0001ea94 S: 250 recipient -> ok -> 20050121 10:08:30 0001ea94 C: RCPT TO: -> -> 20050121 10:08:30 0001ea94 S: 452 Too many recipients -> 20050121 10:08:30 0001ea94 C: QUIT -> 20050121 10:08:30 0001ea94 sapcbv : 250 -> -> The idea of CBV is when someone is sending you mail (from yahoo.com), -> the theory that you should be able to write back to them. If you -> can't, then its probably a bad address. -> -> So CBV tries to act like its going to send mail, but only goes as far -> to issueing the: -> -> RCPT TO: -> -> if yahoo response with a 45x or 55x number, its bad. If 250, its good. -> -> But WCSAP goes one step further and ask the question: -> -> "ok, if yahoo says this address is ok, then lets try -> a fake address to see if its accepts any thing!" -> -> That would be the line above: -> -> RCPT TO: -> -> where wcsap tries to see if YAHOO accepts any junk. If no, then its -> WCSAP says: -> -> "Ok, we done the best we can. Yahoo is not accepting junk -> but it did accept the first address of interest. So its -> ok." -> -> If Yahoo had accepted the junk address, wcSAP assumes the site is a -> open relay and thats normally bad. -> -> So check for the same activity in your logs. The above was 2005. -> Yahoo might have changed policies and have a different result. -> -> -> -> -- -> Hector, Engineering & Technical Support -> Santronics Software, Inc. -> http://www.santronics.com (sales) -> http://www.winserver.com (support) -> http://www.winserver.com/AupInfo (Online AUP Help) -> Office: 305-248-3204 --- Platinum Xpress/Win/WINServer v3.1 * Origin: Prison Board BBS Mesquite Tx //telnet.RDFIG.NET www. (1:124/5013) .