Re: [twsocket] abnormal winsock behaviour by firewall
Hello! > Hello, > Just information because I think this is interesting to know: > Normally when I want to know if there is a server on a machine I try to > connect on the port where it should listen and check Error argument in > OnSessionConnected. > If you do this on a machine where Norton antivirus is running, and you > try to connect on port 'smtp' and there is _no_ server and 'mail > checking' is checked in the antivirus thing then OnSessionConnected will > fire without error and a while later OnsessionClose will fire with a > 10053. There were other cases of abnormal behavior - AFAIR one of Outpost versions were breaking connection (without informing client about this) when one of data lines in POP3 connection exceeded 1024 bytes. Mail apps without any internal timeouts and manual connection breaking capabilities were mostly affected by this. -- Piotr "Hellrayzer" Dalek [EMAIL PROTECTED] -- O kobietach, dla kobiet... >>> http://link.interia.pl/f18b4 -- To unsubscribe or change your settings for TWSocket mailing list please goto http://www.elists.org/mailman/listinfo/twsocket Visit our website at http://www.overbyte.be
Re: [twsocket] [tsyncsmtpcli] Problem sending email toExchange2000server
Hi No, it is *not* using IMAP4 - it's Outlook Express (not Outlook) we're using. They have the same name but are quite different. However, we will get a non-MS email client like pheonix tried out tomorrow. I'll post on my findings. Pete. - Original Message - From: "Francois PIETTE" <[EMAIL PROTECTED]> To: "ICS support mailing" Sent: Monday, September 19, 2005 7:07 PM Subject: Re: [twsocket] [tsyncsmtpcli] Problem sending email toExchange2000server > Yes, IMAP4 does it all. > -- > [EMAIL PROTECTED] > http://www.overbyte.be > > - Original Message - > From: "Wilfried Mestdagh" <[EMAIL PROTECTED]> > To: "ICS support mailing" > Sent: Monday, September 19, 2005 8:05 PM > Subject: Re: [twsocket] [tsyncsmtpcli] Problem sending email to > Exchange2000server > > >> Hello Francois, >> >>> Verify that OE use SMTP and don't use IMAP4. >> >> Is IMAP also used to send emails ? I have the problem that M$ Echange >> complains it will not relay, but sending with outlook to same >> destination it works. So probably this is the reason... >> >> --- >> Rgds, Wilfried >> http://www.mestdagh.biz >> >> -- >> To unsubscribe or change your settings for TWSocket mailing list >> please goto http://www.elists.org/mailman/listinfo/twsocket >> Visit our website at http://www.overbyte.be > > -- > To unsubscribe or change your settings for TWSocket mailing list > please goto http://www.elists.org/mailman/listinfo/twsocket > Visit our website at http://www.overbyte.be > > -- To unsubscribe or change your settings for TWSocket mailing list please goto http://www.elists.org/mailman/listinfo/twsocket Visit our website at http://www.overbyte.be
Re: [twsocket] [tsyncsmtpcli] Problem sending email to Exchange2000server
Yes, IMAP4 does it all. -- [EMAIL PROTECTED] http://www.overbyte.be - Original Message - From: "Wilfried Mestdagh" <[EMAIL PROTECTED]> To: "ICS support mailing" Sent: Monday, September 19, 2005 8:05 PM Subject: Re: [twsocket] [tsyncsmtpcli] Problem sending email to Exchange2000server > Hello Francois, > >> Verify that OE use SMTP and don't use IMAP4. > > Is IMAP also used to send emails ? I have the problem that M$ Echange > complains it will not relay, but sending with outlook to same > destination it works. So probably this is the reason... > > --- > Rgds, Wilfried > http://www.mestdagh.biz > > -- > To unsubscribe or change your settings for TWSocket mailing list > please goto http://www.elists.org/mailman/listinfo/twsocket > Visit our website at http://www.overbyte.be -- To unsubscribe or change your settings for TWSocket mailing list please goto http://www.elists.org/mailman/listinfo/twsocket Visit our website at http://www.overbyte.be
Re: [twsocket] [tsyncsmtpcli] Problem sending email to Exchange 2000server
Hello Francois, > Verify that OE use SMTP and don't use IMAP4. Is IMAP also used to send emails ? I have the problem that M$ Echange complains it will not relay, but sending with outlook to same destination it works. So probably this is the reason... --- Rgds, Wilfried http://www.mestdagh.biz -- To unsubscribe or change your settings for TWSocket mailing list please goto http://www.elists.org/mailman/listinfo/twsocket Visit our website at http://www.overbyte.be
Re: [twsocket] [tsyncsmtpcli] Problem sending email to Exchange2000server
Hi >Are you absolutely sure? We get customers emailing us all the time saying > "Outlook works fine We get that too from our customers. Outlook Express and Outlook are quite different. We are using OE as the tester. >Exchange is a beast with way to many stupid settings. I'll second that! >Maybe > Outlook is using one type of authentication while your SMTP client is using > a less secure method (or no authentication at all). Our client is not using SMTP authentication, but neither is OE. I'm going to give SocketSpy a try to see what could be up. Thanks to everyone for their help. Petew. - Original Message - From: "Jake Traynham" <[EMAIL PROTECTED]> To: "ICS support mailing" Sent: Monday, September 19, 2005 4:58 PM Subject: Re: [twsocket] [tsyncsmtpcli] Problem sending email to Exchange2000server > Hello, > > At 10:16 AM 9/19/2005, you wrote: > >Hi > > > > >> Verify that OE use SMTP and don't use IMAP4. > > > >It definately uses SMTP. > > Are you absolutely sure? We get customers emailing us all the time saying > "Outlook works fine, but your [SMTP based program] won't send emails > outside of our domain!" It's always that Outlook is connecting to the > server using IMAP and the settings on the server are set to allow those > emails to "relay" or whatever. I would double- and triple-check the > settings on Exchange to make sure that emails coming in over SMTP can send > out to the internet. Exchange is a beast with way to many stupid settings. > > The only other thing I can think of still has to do with the server side: > see if there's some settings in Exchange that limit who can relay emails > based on what type of authentication they use to access the server. Maybe > Outlook is using one type of authentication while your SMTP client is using > a less secure method (or no authentication at all). > > I hope this helps, > Jake > > > -- > Jake Traynham > Comm-Unity Networking Systems > FSA Associate Level Members > http://www.cnsplug-ins.com/ > > -- > To unsubscribe or change your settings for TWSocket mailing list > please goto http://www.elists.org/mailman/listinfo/twsocket > Visit our website at http://www.overbyte.be > > > __ NOD32 1.1220 (20050919) Information __ > > This message was checked by NOD32 antivirus system. > http://www.eset.com > > -- To unsubscribe or change your settings for TWSocket mailing list please goto http://www.elists.org/mailman/listinfo/twsocket Visit our website at http://www.overbyte.be
Re: [twsocket] [tsyncsmtpcli] Problem sending email to Exchange2000server
Hello, At 10:16 AM 9/19/2005, you wrote: >Hi > > >> Verify that OE use SMTP and don't use IMAP4. > >It definately uses SMTP. Are you absolutely sure? We get customers emailing us all the time saying "Outlook works fine, but your [SMTP based program] won't send emails outside of our domain!" It's always that Outlook is connecting to the server using IMAP and the settings on the server are set to allow those emails to "relay" or whatever. I would double- and triple-check the settings on Exchange to make sure that emails coming in over SMTP can send out to the internet. Exchange is a beast with way to many stupid settings. The only other thing I can think of still has to do with the server side: see if there's some settings in Exchange that limit who can relay emails based on what type of authentication they use to access the server. Maybe Outlook is using one type of authentication while your SMTP client is using a less secure method (or no authentication at all). I hope this helps, Jake -- Jake Traynham Comm-Unity Networking Systems FSA Associate Level Members http://www.cnsplug-ins.com/ -- To unsubscribe or change your settings for TWSocket mailing list please goto http://www.elists.org/mailman/listinfo/twsocket Visit our website at http://www.overbyte.be
Re: [twsocket] [tsyncsmtpcli] Problem sending email toExchange 2000server
DZ-Jay wrote: > Francois Piette wrote: >> Verify that OE use SMTP and don't use IMAP4. >> Use a netwrok sniffer to see exactly what OE does and what your program >> does (you can simply log what your program does). > > You can try Wilfried's SocketSpy proxy from the UserMade section of the > ICS Home Page. I think it also can be any SPAM/content-filtering on the server-side, hard to debug anyway, make sure to send the same context, using the same encoding type as with OE, if that failes as well, it's probably something in the headers. Arno Garrels -- To unsubscribe or change your settings for TWSocket mailing list please goto http://www.elists.org/mailman/listinfo/twsocket Visit our website at http://www.overbyte.be
Re: [twsocket] [tsyncsmtpcli] Problem sending email to Exchange 2000server
Francois Piette wrote: > Verify that OE use SMTP and don't use IMAP4. > Use a netwrok sniffer to see exactly what OE does and what your program does > (you can simply log > what your program does). You can try Wilfried's SocketSpy proxy from the UserMade section of the ICS Home Page. dZ. -- To unsubscribe or change your settings for TWSocket mailing list please goto http://www.elists.org/mailman/listinfo/twsocket Visit our website at http://www.overbyte.be
Re: [twsocket] [tsyncsmtpcli] Problem sending email to Exchange2000server
Hi >> Verify that OE use SMTP and don't use IMAP4. It definately uses SMTP. Pete - Original Message - From: "Francois Piette" <[EMAIL PROTECTED]> To: "ICS support mailing" Sent: Monday, September 19, 2005 4:03 PM Subject: Re: [twsocket] [tsyncsmtpcli] Problem sending email to Exchange2000server > Verify that OE use SMTP and don't use IMAP4. > Use a netwrok sniffer to see exactly what OE does and what your program does (you can simply log > what your program does). > > -- > Contribute to the SSL Effort. Visit > http://www.overbyte.be/eng/ssl.html > -- > [EMAIL PROTECTED] > Author of ICS (Internet Component Suite, freeware) > Author of MidWare (Multi-tier framework, freeware) > http://www.overbyte.be > > > - Original Message - > From: "Pete Williams" <[EMAIL PROTECTED]> > To: > Sent: Monday, September 19, 2005 12:23 PM > Subject: [twsocket] [tsyncsmtpcli] Problem sending email to Exchange 2000server > > > > Hi > > > > (Before saying this is a server problem, read the whole message, as > > it's got us confused) > > > > Our ICS-based email app (using TSnycSMTPCli) work fine most of the > > time. We have once instance though where when sending external emails > > (i.e., emails that require to be sent over the internet, not > > internally) the application using ICS thinks it's sent, but the email > > just disappears. Internal emails go fine. > > > > Now, the strange thing is that Outlook Express (connected as a > > SMTP/POP3 client) on the same machine as ICS *can* send external > > emails with no problem. > > > > Does anyone have any ideas as to why OE might be able to send, and > > TSyncSMTPCli might not? There are no errors reported by ICS. > > > > If anyone can help I'd be grateful. > > > > Pete Williams. > > > > > > -- > > To unsubscribe or change your settings for TWSocket mailing list > > please goto http://www.elists.org/mailman/listinfo/twsocket > > Visit our website at http://www.overbyte.be > > -- > To unsubscribe or change your settings for TWSocket mailing list > please goto http://www.elists.org/mailman/listinfo/twsocket > Visit our website at http://www.overbyte.be > > > __ NOD32 1.1219 (20050916) Information __ > > This message was checked by NOD32 antivirus system. > http://www.eset.com > > -- To unsubscribe or change your settings for TWSocket mailing list please goto http://www.elists.org/mailman/listinfo/twsocket Visit our website at http://www.overbyte.be
Re: [twsocket] [tsyncsmtpcli] Problem sending email to Exchange 2000server
Verify that OE use SMTP and don't use IMAP4. Use a netwrok sniffer to see exactly what OE does and what your program does (you can simply log what your program does). -- Contribute to the SSL Effort. Visit http://www.overbyte.be/eng/ssl.html -- [EMAIL PROTECTED] Author of ICS (Internet Component Suite, freeware) Author of MidWare (Multi-tier framework, freeware) http://www.overbyte.be - Original Message - From: "Pete Williams" <[EMAIL PROTECTED]> To: Sent: Monday, September 19, 2005 12:23 PM Subject: [twsocket] [tsyncsmtpcli] Problem sending email to Exchange 2000server > Hi > > (Before saying this is a server problem, read the whole message, as > it's got us confused) > > Our ICS-based email app (using TSnycSMTPCli) work fine most of the > time. We have once instance though where when sending external emails > (i.e., emails that require to be sent over the internet, not > internally) the application using ICS thinks it's sent, but the email > just disappears. Internal emails go fine. > > Now, the strange thing is that Outlook Express (connected as a > SMTP/POP3 client) on the same machine as ICS *can* send external > emails with no problem. > > Does anyone have any ideas as to why OE might be able to send, and > TSyncSMTPCli might not? There are no errors reported by ICS. > > If anyone can help I'd be grateful. > > Pete Williams. > > > -- > To unsubscribe or change your settings for TWSocket mailing list > please goto http://www.elists.org/mailman/listinfo/twsocket > Visit our website at http://www.overbyte.be -- To unsubscribe or change your settings for TWSocket mailing list please goto http://www.elists.org/mailman/listinfo/twsocket Visit our website at http://www.overbyte.be
Re: [twsocket] [tsyncsmtpcli] Problem sending email to Exchange2000 server
DZ-Jay wrote: > Another thing to consider is the source IP: the Exchange server might be > rejecting messages from your client's IP address. Nevermind that comment. I just re-read your original post, and you are testing both clients from the same machine. dZ. -- To unsubscribe or change your settings for TWSocket mailing list please goto http://www.elists.org/mailman/listinfo/twsocket Visit our website at http://www.overbyte.be
Re: [twsocket] [tsyncsmtpcli] Problem sending email to Exchange2000 server
Pete Williams wrote: >>First, what kind of SMTP Server is receiving the e-mails on the > > other end? > > Exchange 2000 server. Well, that says something: OE (from MS, maker of Exchange) is being accepted, but not your custom client. There might be some special header that it is looking for that is not reproduced on your ICS client. >>Second, are you positive that your ICS application is sending a QUIT > command at the end of the transaction? > > I believe so. The function QuitSync is called, and the return code > tested. Then that's not it. >>And third, the server might be rejecting messages from your >>ICS client because it does not recognize the MUA as a "valid" one, >>while it recognizes OE as a legitimate mailer. > > That's an interesting one. What is MUA and how do I set it? Sorry for > what is probably a dumb question. MUA is Mail User Agent (mail client), your ICS client. It is usually specified in a header line such as "X-Mailer:". I suggest first to compare the headers of the outgoing OE messages to the ones of your ICS client and see if you can mimic Outlook Express by reproducing the same types of headers. Another thing to consider is the source IP: the Exchange server might be rejecting messages from your client's IP address. dZ. -- To unsubscribe or change your settings for TWSocket mailing list please goto http://www.elists.org/mailman/listinfo/twsocket Visit our website at http://www.overbyte.be
Re: [twsocket] [tsyncsmtpcli] Problem sending email to Exchange2000 server
Wow thanks for your quick reply. I'll reply between the lines. > First, what kind of SMTP Server is receiving the e-mails on the other end? Exchange 2000 server. >Second, are you positive that your ICS application is sending a QUIT command at the end of the transaction? I believe so. The function QuitSync is called, and the return code tested. >And third, the server might be rejecting messages from your > ICS client because it does not recognize the MUA as a "valid" one, > while it recognizes OE as a legitimate mailer. That's an interesting one. What is MUA and how do I set it? Sorry for what is probably a dumb question. Pete. - Original Message - From: "DZ-Jay" <[EMAIL PROTECTED]> To: "ICS support mailing" Sent: Monday, September 19, 2005 11:29 AM Subject: Re: [twsocket] [tsyncsmtpcli] Problem sending email to Exchange2000 server > A few things come to mind. First, what kind of SMTP Server is > receiving the e-mails on the other end? This might be important, as > some servers have some weird, non-standard requirements or modus > operandi. Second, are you positive that your ICS application is > sending a QUIT command at the end of the transaction? Some servers > require this in order to queue a message, and if the connection is > closed without receiving the QUIT command, they might dismiss the > message. And third, the server might be rejecting messages from your > ICS client because it does not recognize the MUA as a "valid" one, > while it recognizes OE as a legitimate mailer. > > Can you post, or send by private message, a verbose log of a complete > SMTP transaction between your ICS client and the server, from one of > those messages that is "lost"? Also, you might want to compare the > headers sent by your ICS client and those sent by OE. Try mimicking OE > by forging the message's headers to look like Outlook Express' and see > if that helps. > > dZ. > > On Sep 19, 2005, at 06:23, Pete Williams wrote: > > > Hi > > > > (Before saying this is a server problem, read the whole message, as > > it's got us confused) > > > > Our ICS-based email app (using TSnycSMTPCli) work fine most of the > > time. We have once instance though where when sending external emails > > (i.e., emails that require to be sent over the internet, not > > internally) the application using ICS thinks it's sent, but the email > > just disappears. Internal emails go fine. > > > > Now, the strange thing is that Outlook Express (connected as a > > SMTP/POP3 client) on the same machine as ICS *can* send external > > emails with no problem. > > > > Does anyone have any ideas as to why OE might be able to send, and > > TSyncSMTPCli might not? There are no errors reported by ICS. > > > > If anyone can help I'd be grateful. > > > > Pete Williams. > > > > > > -- > > To unsubscribe or change your settings for TWSocket mailing list > > please goto http://www.elists.org/mailman/listinfo/twsocket > > Visit our website at http://www.overbyte.be > > > > -- > To unsubscribe or change your settings for TWSocket mailing list > please goto http://www.elists.org/mailman/listinfo/twsocket > Visit our website at http://www.overbyte.be > > > __ NOD32 1.1219 (20050916) Information __ > > This message was checked by NOD32 antivirus system. > http://www.eset.com > > -- To unsubscribe or change your settings for TWSocket mailing list please goto http://www.elists.org/mailman/listinfo/twsocket Visit our website at http://www.overbyte.be
Re: [twsocket] [tsyncsmtpcli] Problem sending email to Exchange 2000 server
A few things come to mind. First, what kind of SMTP Server is receiving the e-mails on the other end? This might be important, as some servers have some weird, non-standard requirements or modus operandi. Second, are you positive that your ICS application is sending a QUIT command at the end of the transaction? Some servers require this in order to queue a message, and if the connection is closed without receiving the QUIT command, they might dismiss the message. And third, the server might be rejecting messages from your ICS client because it does not recognize the MUA as a "valid" one, while it recognizes OE as a legitimate mailer. Can you post, or send by private message, a verbose log of a complete SMTP transaction between your ICS client and the server, from one of those messages that is "lost"? Also, you might want to compare the headers sent by your ICS client and those sent by OE. Try mimicking OE by forging the message's headers to look like Outlook Express' and see if that helps. dZ. On Sep 19, 2005, at 06:23, Pete Williams wrote: > Hi > > (Before saying this is a server problem, read the whole message, as > it's got us confused) > > Our ICS-based email app (using TSnycSMTPCli) work fine most of the > time. We have once instance though where when sending external emails > (i.e., emails that require to be sent over the internet, not > internally) the application using ICS thinks it's sent, but the email > just disappears. Internal emails go fine. > > Now, the strange thing is that Outlook Express (connected as a > SMTP/POP3 client) on the same machine as ICS *can* send external > emails with no problem. > > Does anyone have any ideas as to why OE might be able to send, and > TSyncSMTPCli might not? There are no errors reported by ICS. > > If anyone can help I'd be grateful. > > Pete Williams. > > > -- > To unsubscribe or change your settings for TWSocket mailing list > please goto http://www.elists.org/mailman/listinfo/twsocket > Visit our website at http://www.overbyte.be > -- To unsubscribe or change your settings for TWSocket mailing list please goto http://www.elists.org/mailman/listinfo/twsocket Visit our website at http://www.overbyte.be
[twsocket] [tsyncsmtpcli] Problem sending email to Exchange 2000 server
Hi (Before saying this is a server problem, read the whole message, as it's got us confused) Our ICS-based email app (using TSnycSMTPCli) work fine most of the time. We have once instance though where when sending external emails (i.e., emails that require to be sent over the internet, not internally) the application using ICS thinks it's sent, but the email just disappears. Internal emails go fine. Now, the strange thing is that Outlook Express (connected as a SMTP/POP3 client) on the same machine as ICS *can* send external emails with no problem. Does anyone have any ideas as to why OE might be able to send, and TSyncSMTPCli might not? There are no errors reported by ICS. If anyone can help I'd be grateful. Pete Williams. -- To unsubscribe or change your settings for TWSocket mailing list please goto http://www.elists.org/mailman/listinfo/twsocket Visit our website at http://www.overbyte.be
