Slow forwarding of HTML messages

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Slow forwarding of HTML messages

Alexey
Hello.

Could you help me to figure out where is the problem?
I noticed that html messages forwards very slow.

console log
[04-Mar-2019 15:22:18.747078 +0000]: <sttrrf6k> mail/preview [1.1 MB/1.3
MB]: 0.0911 sec
[04-Mar-2019 15:22:21.304034 +0000]: <sttrrf6k> mail/compose [971 KB/1.0
MB]: 0.1190 sec
[04-Mar-2019 15:22:21.595819 +0000]: <sttrrf6k> mail/compose [1.3 MB/1.7
MB]: 0.1237 sec
[04-Mar-2019 15:22:25.033660 +0000]: <sttrrf6k> mail/autocomplete [958
KB/1.0 MB]: 0.0049 sec
[04-Mar-2019 15:22:27.665898 +0000]: <sttrrf6k> mail/autocomplete [958
KB/1.0 MB]: 0.0049 sec
[04-Mar-2019 15:22:41.789853 +0000]: <sttrrf6k> mail/send [1.2 MB/1.3
MB]: 8.4665 sec             <<<--------------
[04-Mar-2019 15:22:42.664653 +0000]: <sttrrf6k> mail [1.2 MB/1.5 MB]:
0.1340 sec
[04-Mar-2019 15:22:43.505941 +0000]: <sttrrf6k> mail/list [1.0 MB/1.1
MB]: 0.0909 sec

imap log
[04-Mar-2019 15:22:21.557317 +0000]: <sttrrf6k> [8932] S: A0005 OK Fetch
completed (0.001 + 0.000 secs).
[04-Mar-2019 15:22:21.594855 +0000]: <sttrrf6k> [8932] C: A0006 LOGOUT
[04-Mar-2019 15:22:21.595485 +0000]: <sttrrf6k> [8932] S: * BYE Logging
out
[04-Mar-2019 15:22:21.595557 +0000]: <sttrrf6k> [8932] S: A0006 OK
Logout completed (0.000 + 0.000 secs).
. . .
[04-Mar-2019 15:22:41.607159 +0000]: <sttrrf6k> [7CEA] S: * OK
[CAPABILITY IMAP4rev1 LITERAL+ SASL-IR LOGIN-REFERRALS ID ENABLE IDLE
AUTH=PLAIN] Dovecot ready.

 From SMTP Server log I got that at 15:22:41 email was really gotten and
transferred to recipient.

I have no idea, what's happens past 8 seconds.

Regards,
Alexey.
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Re: Slow forwarding of HTML messages

Vincent Van Houtte

On 2019-03-04 16:40, Alexey wrote:

I have no idea, what's happens past 8 seconds.

Can you check your SMTP / LMTP / SPAMfilter-of-your-choice logs? Maybe you need to enable debugging logs.

I noticed slow sending of emails containing attachments and fixed it by configuring my SMTP server (exim4) to not scan outgoing messages for SPAM. For me, the issue surfaced when I upgraded my Debian Jessie server to Debian Stretch.

Kr,

Vincent

--
Vincent Van Houtte

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