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...ackground, this is from Horde's ActiveSync library, when it is trying to determine what UIDs have recently been expunged. I can guarantee that when this command was sent, there was only one or two emails that were removed since the provided MODSEQ value. C: 8 UID FETCH 1:* UID (VANISHED CHANGEDSINCE 587742) S: * VANISHED (EARLIER) 1:119944,119947:123482,123484:128043,128045:130388,130390:130456,130458:132127,132129:135832,135834:136201,136203:136301,136303:136316,136318:138502,138504:140099,140101:141908,141910:142607,142609:142744,142746:142865,142867:143160,143164:143173,143176:143179,1431...

...Classic Phone (BBOS 10.3.2.2876) in combination with Dovecot 2.2.13 while trying to fetch mails. Before burying myself into debugging sessions, i try to get an understanding if the following is a Client- or a Server-specific error in the behaviour: CIGA8 UID FETCH 10009:10035 (UID FLAGS) (CHANGEDSINCE NOMODSEQ) CIGA8 BAD Error in IMAP command UID FETCH: Invalid CHANGEDSINCE modseq. Following the full conversation. ---- * OK [CAPABILITY IMAP4rev1 LITERAL+ SASL-IR LOGIN-REFERRALS ID ENABLE IDLE STARTTLS AUTH=PLAIN AUTH=LOGIN AUTH=DIGEST-MD5 AUTH=CRAM-MD5] Dovecot on xxx ready. CIGA1 CAPABILIT...

These commands both work in Dovecot (as of 2.1.3): 1 UID FETCH 1:* () (CHANGEDSINCE 1) * 1 FETCH (UID 30097 MODSEQ (19554)) [...] 1 OK Fetch completed. 2 FETCH 1:* () (CHANGEDSINCE 1) * 2 FETCH (MODSEQ (19554)) [...] 2 OK Fetch completed. However, RFC 3501 indicates that an empty FETCH attribute list is incorrect: fetch = "FETCH" SP sequence-set SP ("AL...

...76) in combination with Dovecot 2.2.13 while trying to > fetch mails. > > Before burying myself into debugging sessions, i try to get an > understanding if the following is a Client- or a Server-specific > error in the behaviour: > > CIGA8 UID FETCH 10009:10035 (UID FLAGS) (CHANGEDSINCE NOMODSEQ) > CIGA8 BAD Error in IMAP command UID FETCH: Invalid CHANGEDSINCE > modseq. > > Following the full conversation. > ---- > * OK [CAPABILITY IMAP4rev1 LITERAL+ SASL-IR LOGIN-REFERRALS ID > ENABLE IDLE STARTTLS AUTH=PLAIN AUTH=LOGIN AUTH=DIGEST-MD5 > AUTH=CRAM-MD5] D...

...tion. - Connection "A" - an email app where I set or clear \Flagged on two messages. The IDLE connection is silent (no unsolicited notifications about these flags). - Connection "B" - an email app where I do a refresh - it does a SELECT (CONDSTORE) followed by FETCH UID FLAGS CHANGEDSINCE (because it sees that there are only flags changes). ---> the IDLE connection is notified about flags changes immediately right as Connection "B" is pulling its changes. I tried a direct network connection (netcat) instead of Connection "B" and the actual trigger is SELECT...

..."A" - an email app where I set or clear \Flagged on two messages. > > The IDLE connection is silent (no unsolicited notifications about these flags). > > - Connection "B" - an email app where I do a refresh - it does a SELECT (CONDSTORE) followed by FETCH UID FLAGS CHANGEDSINCE (because it sees that there are only flags changes). > > ---> the IDLE connection is notified about flags changes immediately right as Connection "B" is pulling its changes. > > I tried a direct network connection (netcat) instead of Connection "B" and the actua...

Hello, I'm experiencing slow flags changes over IMAP IDLE: - If I start an IDLE session / command - Change the flags of some messages via another email app - Dovecot can take a minute or more to notify the IDLE connection about flags changes If I use another email app to add or remove a message, Dovecot sends that (EXISTS / EXPUNGE) instantly and also flushes the (so far delayed) flags