Subj : Re: Not able to recieve mail To : All From : HECTOR SANTOS Date : Thu Jan 31 2019 19:18:38 Date: Fri, 10 Apr 2009 04:51:34 -0400 From: HECTOR SANTOS To: Mike Roberts Subject: Re: Not able to recieve mail Newsgroups: win.server.smtp.&.avs Message-ID: <1239357124.46.1238964120@winserver.com> References: <1238964120.46.1238864843@winserver.com> X-WcMsg-Attr: Rcvd X-Mailer: Wildcat! Interactive Net Server v7.0.454.5 Lines: 188 This appears to be a DNS (Domain Name Server) lookup issue. sapcbv : rejected - can not resolve yahoo.com In other words, its doing something like this: NSLOOKUP -query=mx yahoo.com which you can type from the dos command and it could not be resolved. If I type that command above now, I get this: Server: dns.mia.bellsouth.net Address: 205.152.144.23 Non-authoritative answer: yahoo.com MX preference = 1, mail exchanger = b.mx.mail.yahoo.com yahoo.com MX preference = 1, mail exchanger = c.mx.mail.yahoo.com yahoo.com MX preference = 1, mail exchanger = d.mx.mail.yahoo.com yahoo.com MX preference = 1, mail exchanger = e.mx.mail.yahoo.com yahoo.com MX preference = 1, mail exchanger = f.mx.mail.yahoo.com yahoo.com MX preference = 1, mail exchanger = g.mx.mail.yahoo.com yahoo.com MX preference = 1, mail exchanger = a.mx.mail.yahoo.com which are the servers to send mail too. What happen is that this didn't work for you. It generally means your connection with ISP has a DNS setup issue or they were down or their DNS servers were down or there is a firewall, etc, who knows. But before you can use WCSAP or send mail with WCSMTP, you must be able to do NSLOOKUP commands from the PC wcSMTP is running. Do it for other domains too: NSLOOKUP -query=mx gmail.com NSLOOKUP -query=mx santronics.com NSLOOKUP -query=mx microsoft.com NSLOOKUP -query=mx live.com When these return valid MX records, then you know your DNS resolution is working with the ISP connection. etc. Mike Roberts wrote: > 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 > -- 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) .