# BL2100: POP3 problems **URL:** \ **Category:** Rabbit Software\ **Tags:** sbc, pop3, email, bl2100\ **Created:** [August 28, 2014, 8:12am UTC](https://forums.digi.com/t/bl2100-pop3-problems/13519 "2014-08-28T08:12:39Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![nwillems](https://avatars.discourse-cdn.com/v4/letter/n/f07891/32.png) [@nwillems](https://forums.digi.com/u/nwillems)\ **Post date:** [August 28, 2014, 8:12am UTC](https://forums.digi.com/t/bl2100-pop3-problems/13519/1 "2014-08-28T08:12:39Z")
Hello, when executing the pop3 sampleprogram parse\_extra.c in order to having the SBC receive mails and delete them from the POP3 mailserver, it seems that often mails are missing. More detailed explanation: please see below. Thanks in advance for having a look at this issue I’m dealing with!! Noël Willems I did build in a small loop into the sample program so the mailbox is checked every 30secs, further no modifications. No other program is accessing the mailbox. It doesn’t happen when I perform the same with MSOutlook. For testing and setting up this text I did send 11 mails, with the single charactar subjects a-b-c-d-e-f-g-h-i-j-k. Chronological: 1. The first mail with subj “a” is received correctly. 2. 2nd mail with subj “b” is sent –\> wait for checkkingmailbox –\> no mail! 3. Try to send 2 mails before the next mailboxcheck: 3rd & 4th mail with subj "c "and “d” are missing –\> no mail! 4. When I send again 2 mails before the next 30secs are passed and: these mails are received (“e”-“f”). 5. “h” and “i”: missing 6. “j” and “k”: OK … see stdio output below. When I switch of the deleting, it works better, but each time all the mails on the server are received which is not disered. Is there something wrong with the pop3.lib? I couldn’t find any mistakes concerning pop\_msgcount or pop\_msgnum in it, so I guess it has to do with me :-). What could be causing this? The mailserver? below one can find the stdio output (dynC9.62) for sending a the above mails to the SBC’s mail adress. I removed the sender’s e-mail out of the text. Resolving name… Calling pop3\_getmail()… Entering pop3\_tick()… RECEIVING MESSAGE \<1\> From: =?iso-8859-1?Q?— To: Subject: a POP was successful! All done! * * * Resolving name… Calling pop3\_getmail()… Entering pop3\_tick()… POP was successful! All done! * * * Resolving name… Calling pop3\_getmail()… Entering pop3\_tick()… POP was successful! All done! * * * Resolving name… Calling pop3\_getmail()… Entering pop3\_tick()… RECEIVING MESSAGE\<2\> From: =?iso-8859-1?Q?— To: Subject: e RECEIVING MESSAGE\<3\> From: =?iso-8859-1?Q?— To: Subject: f POP was successful! All done! * * * Resolving name… Calling pop3\_getmail()… Entering pop3\_tick()… RECEIVING MESSAGE \<1\> From: =?iso-8859-1?Q?— To: Subject: g POP was successful! All done! \*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\* Resolving name… Calling pop3\_getmail()… Entering pop3\_tick()… POP was successful! All done! * * * Resolving name… Calling pop3\_getmail()… Entering pop3\_tick()… RECEIVING MESSAGE\<2\> From: =?iso-8859-1?Q?— To: Subject: j RECEIVING MESSAGE\<3\> From: =?iso-8859-1?Q?— To: Subject: k POP was successful! All done! * * * Resolving name… Calling pop3\_getmail()… Entering pop3\_tick()… POP was successful! All done! * * * Resolving name… Calling pop3\_getmail()… Entering pop3\_tick()… POP was successful! All done! * * * Resolving name… Calling pop3\_getmail()… Entering pop3\_tick()… POP was successful! All done! * * * ---
**Author:** ![trooper2](https://avatars.discourse-cdn.com/v4/letter/t/edb3f5/32.png) [@trooper2](https://forums.digi.com/u/trooper2)\ **Post date:** [August 28, 2014, 10:06am UTC](https://forums.digi.com/t/bl2100-pop3-problems/13519/2 "2014-08-28T10:06:03Z")
Make sure you are using the latest version of Dynamic C and also the latest patches. You can get both at this link [http://www.digi.com/support/productdetail?pid=5053&type=documentation](http://www.digi.com/support/productdetail?pid=5053&type=documentation) ---
**Author:** ![nwillems](https://avatars.discourse-cdn.com/v4/letter/n/f07891/32.png) [@nwillems](https://forums.digi.com/u/nwillems)\ **Post date:** [August 29, 2014, 8:25am UTC](https://forums.digi.com/t/bl2100-pop3-problems/13519/3 "2014-08-29T08:25:31Z")
Hello, thx for the quick respons. I was using DynC 9.62, indeed without the latest patches for the lib-files. Unfortunately updating didn’t solve the problem. It looks that there’s something going wrong with the msgcount or msgnum: first mail is always received correctly. following mails can only be received if one sends more than 1 mail between two mailbox checks. From these multiple mails only the seoncd one & following is received, starting from message \<2\>… but it’s not Always exactly the same behaviour… ---
**Author:** ![trooper2](https://avatars.discourse-cdn.com/v4/letter/t/edb3f5/32.png) [@trooper2](https://forums.digi.com/u/trooper2)\ **Post date:** [August 29, 2014, 9:35am UTC](https://forums.digi.com/t/bl2100-pop3-problems/13519/4 "2014-08-29T09:35:56Z")
You state that you modified the program. Are you still calling pop3\_tick() often enough? This function services the daemon and needs to be called often. You should be able to get more information by uncommenting #define POP\_DEBUG ---
**Author:** ![nwillems](https://avatars.discourse-cdn.com/v4/letter/n/f07891/32.png) [@nwillems](https://forums.digi.com/u/nwillems)\ **Post date:** [August 31, 2014, 11:09pm UTC](https://forums.digi.com/t/bl2100-pop3-problems/13519/5 "2014-08-31T23:09:43Z")
Forget about the text below: issue is S O L V E D: since variable n was global it’s value had to be reset after each mailbox check!!! This reset wasn’t present so the message where n=num was never retrieved. Digging deeper into the POP\_DEBUG helped finding the cause… So it had to do with me :-s. Sorry for that. Thanks!!! Hello & thx again for your effort! The pop3\_tick() is called each loop cycle. I added it on some extra places without result. I activated the POP\_DEBUG, then the output shows that the missing message is detected on the server: POP\_READ\> ‘+OK 1 messages’ but for this particular message, no RECEIVING MESSAGE \<1\> occurs for some reason… The program code can be found below followed by the stdio output with POP\_DEBUG on. Maybe it has something to do with the costate? /\* I hope it turns out a bit readable & you can find the time to have a look at it. \*/ ---
**Author:** ![nwillems](https://avatars.discourse-cdn.com/v4/letter/n/f07891/32.png) [@nwillems](https://forums.digi.com/u/nwillems)\ **Post date:** [August 31, 2014, 11:09pm UTC](https://forums.digi.com/t/bl2100-pop3-problems/13519/6 "2014-08-31T23:09:40Z")
#class auto #define TCPCONFIG 1 #define POP\_HOST “in.telenet.be” #define POP\_USER “dumbanddumber” #define POP\_PASS “dummypassword” #define POP\_DEBUG #define POP\_PARSE\_EXTRA #memmap xmem #use “dcrtcp.lib” #use “pop3.lib” int n; int storemsg(int num, char \*to, char \*from, char \*subject, char \*body, int len) { #GLOBAL\_INIT { n = -1; } ``` if(n != num) { n = num; printf("RECEIVING MESSAGE <%d> ``` “, n); printf(” From: %s “, from); printf(” To: %s “, to); printf(” Subject: %s ", subject); } ``` // printf("MSG_DATA> '%s' ``` ", body); ``` return 0; ``` } void main() { ``` static long address; static int retval; sock_init(); // Wait for the interface to come up while (ifpending(IF_DEFAULT) == IF_COMING_UP) { tcp_tick(NULL); } ``` pop3\_init(storemsg); do { costate // mailtest ivm problemen met ophalen na delete { printf("Resolving name… "); address = resolve(POP\_HOST); printf("Calling pop3\_getmail()… "); pop3\_tick(); pop3\_getmail(POP\_USER, POP\_PASS, address); ``` printf("Entering pop3_tick()... ``` "); while((retval = pop3\_tick()) == POP\_PENDING) continue; ``` if(retval == POP_SUCCESS) printf("POP was successful! ``` "); if(retval == POP\_TIME) printf("POP timed out! "); if(retval == POP\_ERROR) printf("POP returned a general error! "); ``` printf("All done! ``` "); waitfor(DelaySec(30)); } } while(1); }