On Sun, Feb 12, 2023 at 06:49:12PM -0800, David Newman wrote:
> Postfix 3.5.17 on Debian 11
>
> Greetings. I could use some help understanding why postfix takes around
> 60 seconds to accept and forward messages received using submission.
To a small degree because you have unnecessary verbose logging slowing
it down. :-(
> Feb 12 18:02:23 mail10 postfix/submission/smtpd[593931]:
> connect from cpe-2.2.2.2.my.wonderful.isp.com[2.2.2.2]
> Feb 12 18:02:23 mail10 postfix/submission/smtpd[593931]: <
> cpe-2.2.2.2.my.wonderful.isp.com[2.2.2.2]: AUTH PLAIN <sensitive data>
This was just base64 encoded, not encrypted. Posting verbose logging
leaked the password of the user in question, change it promptly. DO NOT
post encoded "AUTH" command content.
> Feb 12 18:02:23 mail10 postfix/submission/smtpd[593931]: send attr
> client_name = cpe-2.2.2.2.my.wonderful.isp.com
> Feb 12 18:02:23 mail10 postfix/submission/smtpd[593931]: send attr
> reverse_client_name = cpe-2.2.2.2.my.wonderful.isp.com
> Feb 12 18:02:53 mail10 postfix/submission/smtpd[593931]:
> permit_mynetworks: cpe-2.2.2.2.my.wonderful.isp.com 2.2.2.2
The 30s delay suggets a slow "cleanup" or a slow policy service.
> Feb 12 18:02:53 mail10 postfix/submission/smtpd[593931]: send attr
> client_address = 2.2.2.2
> Feb 12 18:02:53 mail10 postfix/submission/smtpd[593931]: send attr
> client_name = cpe-2.2.2.2.my.wonderful.isp.com
> Feb 12 18:02:53 mail10 postfix/submission/smtpd[593931]: send attr
> reverse_client_name = cpe-2.2.2.2.my.wonderful.isp.com
> Feb 12 18:03:23 mail10 postfix/submission/smtpd[593931]: >
> cpe-2.2.2.2.my.wonderful.isp.com[2.2.2.2]: 250 2.0.0 Ok: queued as >
> 4PFSKT5m0kzHTbm
Another 30s delay. Your restrictions include:
smtpd_recipient_restrictions =
reject_non_fqdn_recipient
reject_unlisted_recipient
check_policy_service inet:127.0.0.1:7777
permit_mynetworks permit_sasl_authenticated
reject_unauth_destination
check_policy_service inet:127.0.0.1:12340
smtpd_end_of_data_restrictions =
check_policy_service inet:127.0.0.1:7777
The "7777" service is a strong suspect.
--
Viktor.
