Delays in mail deliveries

[Bastian Blank]

On Wed, Mar 02, 2022 at 06:12:28PM +0200, Nikolaos Milas wrote:
> Mar  2 15:30:47 mailgw1 postfix/cleanup[1254592]: 4K7w3q6jL2zMMYV: message-id=<odspmicro-SpoShare-e5cf25a0-d0ea-c000-b666-025e9e385410-1aa7b39f-88ac-4fd9-89dd-afb9eb36dccb-13168c28-f663-4e5f-bda9-1782c685117f at RD501AC5C3338C>
> Mar  2 15:30:47 mailgw1 postfix/qmgr[1253942]: 4K7w3q6jL2zMMYV:
> from=<no-reply at sharepointonline.com>, size=12203, nrcpt=1 (queue active)
> Mar  2 15:35:48 mailgw1 postfix/smtp[1255336]: 4K7w3q6jL2zMMYV:
> to=<userxxxx at noa.gr>, relay=vmail2.noa.gr[194.177.195.166]:25, delay=300,
> delays=0.03/0.02/0.05/300, dsn=2.0.0, status=sent (250 2.0.0 Ok: queued as
> 14A6C809703C1)

This queue id line is from a Postfix, it is not from a Dovecot!  You
need to show logs from vmail2.noa.gr.  And that 300 delay sounds like a
timeout.

Do you actually know your setup?  Or are you guessing?

Bastian

-- 
History tends to exaggerate.
		-- Col. Green, "The Savage Curtain", stardate 5906.4