Re: [Davmail-users] 2 minute delay when sending mail after network change

[Mickaël G. <mgu...@fr...>]

When you say switch wifi network, do you mean your network location IP 
address, ... also changes ?

I had issues a long time ago with company Exchange that had a different 
IP between external and internal facing frontend => had to wait for DNS 
resolution to expire.

However you seem to access O365 so shouldn't be an issue.

The 2 minute delay suggest that cached connections in DavMail fail after 
you switch, and we have an background thread to close idle connections.

Another question: do you have HTTP proxies on one side ?

Regards,


On 28/07/2022 22:38, Dan Christensen wrote:
> I can reproduce the issue with davmail_5.5.1-3299-1_all.deb available
> at https://sourceforge.net/projects/davmail/files/davmail/5.5.1/ ,
> so the upgrade to davmail doesn't explain the change.  Not sure what
> else to suggest.
>
> Dan
>
> On Jul 28, 2022, Dan Christensen <jd...@uw...> wrote:
>
>> If I send an email message through davmail, then switch wifi networks,
>> and then try to send a second message, there is a delay of two minutes.
>> I have included a debug log below, from the start of the second
>> connection until just after the 2 minute delay.  (The last two
>> timestamps differ by 2 minutes.)  I've used davmail for over a year, but
>> this only started happening recently.  It's possible it started when I
>> upgraded my system from Ubuntu 21.10 to 22.04, which upgraded davmail
>> from 5.5.1.3299-5 to 6.0.1.3390-1.  I see that there were O365 changes
>> there, so maybe they are related?
>>
>> I have also included my .davmail.properties (minus the refresh token).
>>
>> Any advice?
>>
>> Thanks,
>>
>> Dan
>>
>> 2022-07-28 16:04:39,795 DEBUG [davmail.smtp.SmtpServer] davmail  - Connection from /127.0.0.1 on port 1025
>> 2022-07-28 16:04:39,795 INFO  [davmail.smtp.SmtpServer] davmail.connection  - CONNECT - 127.0.0.1:53760
>> 2022-07-28 16:04:39,873 DEBUG [SmtpConnection-53760] davmail.http.DavGatewaySSLSocketFactory  - createSocket outlook.office365.com 443
>> 2022-07-28 16:04:40,207 DEBUG [SmtpConnection-53760] davmail.exchange.ExchangeSession  - Test configuration status: 401
>> 2022-07-28 16:04:40,208 DEBUG [SmtpConnection-53760] davmail  - > 220 DavMail 6.0.1-trunk SMTP ready at Thu Jul 28 16:04:40 EDT 2022
>> 2022-07-28 16:04:40,208 DEBUG [SmtpConnection-53760] davmail  - < EHLO snowy
>> 2022-07-28 16:04:40,208 DEBUG [SmtpConnection-53760] davmail  - > 250-snowy
>> 2022-07-28 16:04:40,208 DEBUG [SmtpConnection-53760] davmail  - > 250-AUTH LOGIN PLAIN
>> 2022-07-28 16:04:40,209 DEBUG [SmtpConnection-53760] davmail  - > 250-8BITMIME
>> 2022-07-28 16:04:40,209 DEBUG [SmtpConnection-53760] davmail  - > 250 Hello
>> 2022-07-28 16:04:40,209 DEBUG [SmtpConnection-53760] davmail  - < AUTH PLAIN ********
>> 2022-07-28 16:04:40,209 DEBUG [SmtpConnection-53760] davmail.exchange.ExchangeSession  - Got session davmail.exchange.ews.EwsExchangeSession@50e0b9aa from cache
>> 2022-07-28 16:06:40,234 DEBUG [SmtpConnection-53760]
>> davmail.exchange.ExchangeSession - Session
>> davmail.exchange.ews.EwsExchangeSession@50e0b9aa for user
>> jd...@uw... expired
>>
>>
>> davmail.ssl.keystoreType=
>> davmail.ssl.keystorePass=
>> davmail.proxyPassword=
>> davmail.oauth.tenantId=
>> davmail.oauth.clientId=
>> davmail.smtpPort=1025
>> davmail.enableKerberos=false
>> davmail.folderSizeLimit=
>> davmail.forceActiveSyncUpdate=false
>> davmail.imapAutoExpunge=false
>> davmail.useSystemProxies=false
>> davmail.proxyUser=
>> davmail.caldavEditNotifications=false
>> davmail.ssl.nosecuresmtp=false
>> davmail.caldavPastDelay=0
>> davmail.ssl.keyPass=
>> log4j.logger.httpclient.wire=WARN
>> davmail.noProxyFor=
>> davmail.server=true
>> log4j.logger.org.apache.commons.httpclient=WARN
>> davmail.popMarkReadOnRetr=false
>> davmail.ssl.nosecureimap=false
>> davmail.disableTrayActivitySwitch=false
>> davmail.caldavAutoSchedule=true
>> davmail.enableProxy=false
>> davmail.proxyPort=
>> davmail.logFileSize=10MB
>> davmail.mode=O365Manual
>> davmail.smtpSaveInSent=false
>> davmail.bindAddress=
>> davmail.ssl.nosecurepop=false
>> davmail.ssl.pkcs11Library=
>> log4j.rootLogger=WARN
>> davmail.ssl.keystoreFile=
>> log4j.logger.davmail=DEBUG
>> #log4j.logger.davmail=INFO
>> davmail.ssl.clientKeystoreType=
>> davmail.clientSoTimeout=
>> davmail.ssl.pkcs11Config=
>> davmail.imapPort=
>> davmail.ssl.clientKeystorePass=
>> davmail.url=https://outlook.office365.com/EWS/Exchange.asmx
>> davmail.sentKeepDelay=0
>> davmail.ssl.nosecureldap=false
>> davmail.imapAlwaysApproxMsgSize=false
>> davmail.ssl.nosecurecaldav=false
>> davmail.popPort=
>> davmail.defaultDomain=
>> davmail.showStartupBanner=false
>> davmail.proxyHost=
>> davmail.oauth.persistToken=true
>> davmail.ldapPort=
>> davmail.server.certificate.hash=
>> log4j.logger.org.apache.http.wire=WARN
>> davmail.disableGuiNotifications=false
>> davmail.imapIdleDelay=
>> davmail.allowRemote=false
>> davmail.disableUpdateCheck=false
>> log4j.logger.org.apache.http=WARN
>> davmail.caldavPort=
>> davmail.enableKeepAlive=true
>> davmail.ssl.clientKeystoreFile=
>> davmail.logFilePath=/scratch/davmail.log
>> davmail.carddavReadPhoto=true
>> davmail.keepDelay=30
>> davmail.oauth.redirectUri=
>> davmail.caldavAlarmSound=
>
>
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-- 
Mickael Guessant
mailto:mgu...@fr...