also getting a few of these

2024-12-24T23:19:14.030432+00:00 m0 postfix/smtpd[1414]: connect from 
mdpmta-as-1p-177349-txn.sys.comcast.net[96.103.94.54]
2024-12-24T23:19:14.100806+00:00 m0 postfix/smtpd[1414]: setting up TLS 
connection from mdpmta-as-1p-177349-txn.sys.comcast.net[96.103.94.54]
2024-12-24T23:19:14.101248+00:00 m0 postfix/smtpd[1414]: 
mdpmta-as-1p-177349-txn.sys.comcast.net[96.103.94.54]: TLS cipher list 
"aNULL:-aNULL:HIGH:MEDIUM:+RC4:@STRENGTH"
2024-12-24T23:19:14.101669+00:00 m0 postfix/smtpd[1414]: SSL_accept:before SSL 
initialization
2024-12-24T23:19:14.135827+00:00 m0 postfix/smtpd[1414]: SSL_accept:before SSL 
initialization
2024-12-24T23:19:14.136355+00:00 m0 postfix/smtpd[1414]: SSL_accept:SSLv3/TLS 
read client hello
2024-12-24T23:19:14.136603+00:00 m0 postfix/smtpd[1414]: SSL_accept:SSLv3/TLS 
write server hello
2024-12-24T23:19:14.136848+00:00 m0 postfix/smtpd[1414]: SSL_accept:SSLv3/TLS 
write certificate
2024-12-24T23:19:14.137317+00:00 m0 postfix/smtpd[1414]: SSL_accept:SSLv3/TLS 
write key exchange
2024-12-24T23:19:14.137557+00:00 m0 postfix/smtpd[1414]: SSL_accept:SSLv3/TLS 
write server done
2024-12-24T23:19:14.172697+00:00 m0 postfix/smtpd[1414]: SSL3 alert 
read:fatal:bad certificate
2024-12-24T23:19:14.172937+00:00 m0 postfix/smtpd[1414]: SSL_accept:error in 
error
2024-12-24T23:19:14.173155+00:00 m0 postfix/smtpd[1414]: SSL_accept error from 
mdpmta-as-1p-177349-txn.sys.comcast.net[96.103.94.54]: -1
2024-12-24T23:19:14.173370+00:00 m0 postfix/smtpd[1414]: warning: TLS library 
problem: error:0A000412:SSL routines::sslv3 alert bad 
certificate:../ssl/record/rec_layer_s3.c:1605:SSL alert number 42:
2024-12-24T23:19:14.173672+00:00 m0 postfix/smtpd[1414]: lost connection after 
STARTTLS from mdpmta-as-1p-177349-txn.sys.comcast.net[96.103.94.54]
2024-12-24T23:19:14.174025+00:00 m0 postfix/smtpd[1414]: disconnect from 
mdpmta-as-1p-177349-txn.sys.comcast.net[96.103.94.54] ehlo=1 starttls=0/1 
commands=1/2

but my guess is they really do have a questinable cert

randy
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